{"id":151235,"date":"2023-10-12T06:03:11","date_gmt":"2023-10-12T06:03:11","guid":{"rendered":"https:\/\/www.stellarinfo.com\/blog\/?p=151235"},"modified":"2024-05-08T08:57:34","modified_gmt":"2024-05-08T08:57:34","slug":"fixed-file-format-and-extension-of-filename-dont-match-the-file","status":"publish","type":"post","link":"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/","title":{"rendered":"[Fixed]: File Format and Extension of [filename] don&#8217;t Match. The File could be Corrupted or Unsafe"},"content":{"rendered":"<?xml encoding=\"utf-8\" ?><?xml encoding=\"utf-8\" ?><p>You can encounter the <strong>&ldquo;File format and extension of [filename] don&rsquo;t match. The file could be corrupted or unsafe&rdquo;<\/strong> error when the Excel application detects any issue with the file. This happens when you try to open an old version file format in a newer version or if the file is received from an unsafe destination. This can prevent you from opening the Excel file.<\/p><figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"File Format and Extension don't Match Error in MS Excel [Fixed]\" width=\"750\" height=\"422\" src=\"https:\/\/www.youtube.com\/embed\/ZEyti5O2C9g?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure><p><strong>As indicated from the error message, this error occurs due to the following reasons:<\/strong><\/p><ul class=\"wp-block-list\">\n<li>The file has incorrect file extension.<\/li>\n\n\n\n<li>The file is corrupted.<\/li>\n\n\n\n<li>The file you are trying to open is protected.<\/li>\n<\/ul><p>Now, let&rsquo;s see how to resolve this Excel error.<\/p><h2 class=\"wp-block-heading\" id=\"methods-to-fix-the-&ldquo;file-format-and-extension-of-[filename]-don&rsquo;t-match&rdquo;-error\"><strong>Methods to Fix the &ldquo;File format and extension of [filename] don&rsquo;t match&rdquo; Error<\/strong><\/h2><p>Try the following methods to troubleshoot the &ldquo;File format and extension don&rsquo;t match&rdquo; error in Excel.<\/p><h3 class=\"wp-block-heading\" id=\"h-method-1-rename-the-excel-file\"><strong>Method 1: Rename the Excel File<\/strong><\/h3><p>You can face the &ldquo;File format and extension don&rsquo;t match&rdquo; issue if the file has incorrect extension. It can occur if the file extension has been altered or you&rsquo;ve mistakenly saved the file with incorrect extension. To fix this, you can try renaming the Excel file with the correct file extension.&nbsp;&nbsp;<\/p><h3 class=\"wp-block-heading\" id=\"h-method-2-check-the-default-excel-file-format\"><strong>Method 2: Check the Default Excel File Format<\/strong><\/h3><p>Different versions of Microsoft Excel use different default file formats. For example, .xls is the default file format of older versions (2003 and lower) of Excel, whereas .xlsx format is used by the newer versions (2007 and later). Opening the Excel file with an incompatible extension can cause the &ldquo;File format and extension don&rsquo;t match&rdquo; issue. You can check the Excel version you are using and ensure it&rsquo;s compatible with the Excel file you are trying to open.<\/p><h3 class=\"wp-block-heading\" id=\"h-method-3-change-the-protected-view-settings\"><strong>Method 3: Change the Protected View Settings<\/strong><\/h3><p>You may receive the &ldquo;<strong>File format and extension of excel don&rsquo;t match<\/strong>&rdquo; error if the Excel file is protected. You can check and try disabling the <a href=\"https:\/\/support.microsoft.com\/en-au\/office\/what-is-protected-view-d6f09ac7-e6b9-4495-8e43-2bbcdbcb6653\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Protected View settings<\/a>. &nbsp;<\/p><p><strong>Caution:<\/strong> Changing the Protected View settings can put your system at risk. If the Excel file is being downloaded from the internet, it may contain viruses that can infect your system. So be careful before disabling the Protected View settings.<\/p><h3 class=\"wp-block-heading\" id=\"h-steps-to-change-protected-view-settings-in-excel\"><strong>Steps to Change Protected View Settings in Excel:&nbsp;<\/strong><\/h3><ul class=\"wp-block-list\">\n<li>In the Excel&rsquo;s File menu, click on <strong>Options.<\/strong><\/li>\n\n\n\n<li>Select <strong>Trust Center &gt; Trust Center Settings<\/strong>.&nbsp;<\/li>\n<\/ul><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"826\" height=\"677\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/go-to-trust-center-and-then-trust-center-settings.jpg\" alt=\"Go to Trust Center and then click Trust center settings.\" class=\"wp-image-151242 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/go-to-trust-center-and-then-trust-center-settings.jpg 826w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/go-to-trust-center-and-then-trust-center-settings-300x246.jpg 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/go-to-trust-center-and-then-trust-center-settings-768x629.jpg 768w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/go-to-trust-center-and-then-trust-center-settings-150x123.jpg 150w\" sizes=\"auto, (max-width: 826px) 100vw, 826px\" \/><\/figure><ul class=\"wp-block-list\">\n<li>Under <strong>Trust Center<\/strong>, select <strong>Protected View<\/strong> and disable the below three options:<\/li>\n\n\n\n<li>Enable Protected View for files originating from the internet.<\/li>\n\n\n\n<li>Enable Protected View for files located in potentially unsafe locations.<\/li>\n\n\n\n<li>Enable Protected View for Outlook attachments.<\/li>\n<\/ul><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"824\" height=\"677\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/select-all-the-options-under-protected-view.jpg\" alt=\"In the Trust Center Window, go to the Protected View tab and Disable all Protected View Checkboxes.\" class=\"wp-image-151243 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/select-all-the-options-under-protected-view.jpg 824w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/select-all-the-options-under-protected-view-300x246.jpg 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/select-all-the-options-under-protected-view-768x631.jpg 768w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/select-all-the-options-under-protected-view-150x123.jpg 150w\" sizes=\"auto, (max-width: 824px) 100vw, 824px\" \/><\/figure><ul class=\"wp-block-list\">\n<li>Click <strong>OK. <\/strong>Then, try to open the Excel file.<\/li>\n<\/ul><h3 class=\"wp-block-heading\" id=\"h-method-4-check-and-provide-the-excel-file-permissions\"><strong>Method 4: Check and Provide the Excel File Permissions<\/strong><\/h3><p>Sometimes, you can get the error if you don&rsquo;t have sufficient permissions to open the Excel file. This usually happens when you try to open the Excel file received from other sources. You can check and provide the desired permissions to fix the error. Here are the steps:&nbsp;<\/p><ul class=\"wp-block-list\">\n<li>Locate the affected Excel file, right-click on it, and select <strong>Properties.<\/strong><\/li>\n<\/ul><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"333\" height=\"547\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/go-to-folder-and-select-properties.jpg\" alt=\"Right Click on Excel file and click on Properties\" class=\"wp-image-151248 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/go-to-folder-and-select-properties.jpg 333w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/go-to-folder-and-select-properties-183x300.jpg 183w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/go-to-folder-and-select-properties-150x246.jpg 150w\" sizes=\"auto, (max-width: 333px) 100vw, 333px\" \/><\/figure><ul class=\"wp-block-list\">\n<li>In the <strong>Properties<\/strong> window, click the <strong>Securities<\/strong> option and select <strong>Edit.<\/strong><\/li>\n<\/ul><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"361\" height=\"511\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/click-security-and-then-click-edit-option.jpg\" alt=\"In Properties, Go to the Security Tab and click on Edit.\" class=\"wp-image-151249 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/click-security-and-then-click-edit-option.jpg 361w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/click-security-and-then-click-edit-option-212x300.jpg 212w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/click-security-and-then-click-edit-option-150x212.jpg 150w\" sizes=\"auto, (max-width: 361px) 100vw, 361px\" \/><\/figure><ul class=\"wp-block-list\">\n<li>In the <strong>Security<\/strong> window, under <strong>&lsquo;Group or users name&rsquo;<\/strong>, select the user names. Check the file permissions and make sure <strong>Full Control<\/strong> is enabled. If not, then click on the <strong>Add<\/strong> option.<\/li>\n<\/ul><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"363\" height=\"449\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/click-add-option-under-permissions.jpg\" alt=\"click add option under permissions\" class=\"wp-image-151250 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/click-add-option-under-permissions.jpg 363w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/click-add-option-under-permissions-243x300.jpg 243w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/click-add-option-under-permissions-150x186.jpg 150w\" sizes=\"auto, (max-width: 363px) 100vw, 363px\" \/><\/figure><ul class=\"wp-block-list\">\n<li>Click on the <strong>Advanced <\/strong>option in the <strong>Users, Computers, Service Accounts, or Groups <\/strong>window<strong>.<\/strong><\/li>\n<\/ul><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"456\" height=\"253\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/click-advanced-option-under-user-and-object-type-option.jpg\" alt=\"Under Users, Computers, Service Accounts, or Groups window, click on Advanced.\" class=\"wp-image-151251 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/click-advanced-option-under-user-and-object-type-option.jpg 456w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/click-advanced-option-under-user-and-object-type-option-300x166.jpg 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/click-advanced-option-under-user-and-object-type-option-150x83.jpg 150w\" sizes=\"auto, (max-width: 456px) 100vw, 456px\" \/><\/figure><ul class=\"wp-block-list\">\n<li>Click the <strong>Find Now<\/strong> option. A list of all users and groups appears in the search field.&nbsp;<\/li>\n<\/ul><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"512\" height=\"581\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/click-find-now-option.jpg\" alt=\"In the Select Users, Computers, Service Accounts, or Groups window, click on Find Now.\" class=\"wp-image-151252 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/click-find-now-option.jpg 512w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/click-find-now-option-264x300.jpg 264w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/click-find-now-option-150x170.jpg 150w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><\/figure><ul class=\"wp-block-list\">\n<li>Select<strong> &ldquo;Everyone&rdquo;<\/strong> from the list and then click <strong>OK.<\/strong><\/li>\n<\/ul><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"513\" height=\"579\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/selecting-everyone-from-the-listed-objects.jpg\" alt=\"Select Everyone from the Search Results and Click on OK.\" class=\"wp-image-151253 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/selecting-everyone-from-the-listed-objects.jpg 513w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/selecting-everyone-from-the-listed-objects-266x300.jpg 266w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/selecting-everyone-from-the-listed-objects-150x169.jpg 150w\" sizes=\"auto, (max-width: 513px) 100vw, 513px\" \/><\/figure><ul class=\"wp-block-list\">\n<li>In the <strong>object names<\/strong> field, you will see &lsquo;<strong>Everyone&rsquo;<\/strong>. Click on <strong>OK.<\/strong><\/li>\n<\/ul><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"513\" height=\"579\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/selecting-everyone-from-the-listed-objects-1.jpg\" alt=\"After the &lsquo;Everyone&rsquo; username is entered in the object names field, click on OK.\" class=\"wp-image-151254 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/selecting-everyone-from-the-listed-objects-1.jpg 513w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/selecting-everyone-from-the-listed-objects-1-266x300.jpg 266w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/selecting-everyone-from-the-listed-objects-1-150x169.jpg 150w\" sizes=\"auto, (max-width: 513px) 100vw, 513px\" \/><\/figure><ul class=\"wp-block-list\">\n<li>In the <strong>Permissions <\/strong>window, select <strong>&ldquo;Everyone&rdquo;<\/strong> and enable all options<strong> (Full Control, Modify, Read &amp; Execute, Read, <\/strong>and<strong> Write<\/strong>) under <strong>Permissions for Everyone<\/strong>.<\/li>\n<\/ul><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"363\" height=\"447\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/allow-all-permissions-and-then-apply.jpg\" alt=\"Allow all Permissions for &lsquo;Everyone&rsquo; by checking the boxes under Allow\" class=\"wp-image-151255 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/allow-all-permissions-and-then-apply.jpg 363w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/allow-all-permissions-and-then-apply-244x300.jpg 244w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/allow-all-permissions-and-then-apply-150x185.jpg 150w\" sizes=\"auto, (max-width: 363px) 100vw, 363px\" \/><\/figure><ul class=\"wp-block-list\">\n<li>Click <strong>Apply<\/strong> and then <strong>OK.<\/strong>&nbsp;<\/li>\n<\/ul><h3 class=\"wp-block-heading\" id=\"h-method-4-repair-your-excel-file\"><strong>Method 4: Repair your Excel File<\/strong><\/h3><p>As the error message indicates, corruption is one of the causes of the &ldquo;File format and extension of [filename] don&rsquo;t match&rdquo; error. If your file is corrupted, you can repair it using Microsoft&rsquo;s built-in Open and Repair tool.&nbsp;Here are the steps to run the Open and Repair tool to repair corrupted Excel file:<\/p><ul class=\"wp-block-list\">\n<li>In Excel, click on&nbsp;<strong>File.<\/strong><\/li>\n\n\n\n<li>Click&nbsp;<strong>Open<\/strong>&nbsp;and then click on&nbsp;<strong>Browse<\/strong>&nbsp;to select the corrupted Excel file.<\/li>\n\n\n\n<li>In the&nbsp;<strong>Open<\/strong>&nbsp;dialog box, click the Excel workbook (in which you are facing the error).<\/li>\n\n\n\n<li>Click the arrow next to the&nbsp;<strong>Open<\/strong>&nbsp;button and select&nbsp;<strong>Open and Repair<\/strong>.&nbsp;<\/li>\n\n\n\n<li>Then, click&nbsp;<strong>Repair<\/strong>&nbsp;to recover as much data as possible.<\/li>\n\n\n\n<li>The Excel prompts a message after the repair process is complete. Click&nbsp;<strong>Close.<\/strong><\/li>\n<\/ul><p>The <a href=\"https:\/\/www.stellarinfo.com\/blog\/ms-excel-open-and-repair-option-is-not-working\/\" target=\"_blank\" rel=\"noreferrer noopener\">Open and Repair utility may fail<\/a> to give the intended results. In such a case, you can repair the corrupted\/damaged Excel file using a specialized <a href=\"https:\/\/www.stellarinfo.com\/repair-excel-file.php\" target=\"_blank\" rel=\"noreferrer noopener\">Excel repair tool<\/a>. Stellar Repair for Excel is one such tool that can repair severely corrupted Excel files. With the help of this tool, you can quickly recover all the objects from the Excel file. The tool has a simple user interface that even a non-technical can use to repair the Excel files. The tool can also repair multiple Excel files at once. You can check the tool&rsquo;s functionality by downloading its demo version.<\/p><h2 class=\"wp-block-heading\" id=\"closure\"><strong>Closure<\/strong><\/h2><p>You can encounter the &ldquo;File format and extension of [filename] don&rsquo;t match&rdquo; error due to different reasons. To resolve the issue, you can check the file extension, permissions, protected settings, etc. If you suspect the error has occurred due to corruption in the Excel file, you can try repairing the Excel file using the Open and Repair tool. If nothing works for you, then try <a href=\"https:\/\/www.stellarinfo.com\/repair-excel-file.php\" target=\"_blank\" rel=\"noreferrer noopener\">Stellar Repair for Excel<\/a>. It can repair highly damaged Excel files and recover all the data while preserving the file properties and cell formatting. The tool can help you fix all the common corruption-related errors quickly.&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>You can encounter the &ldquo;File format and extension of [filename] don&rsquo;t match.&hellip; <a class=\"more-link\" href=\"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/\">Continue reading <span class=\"screen-reader-text\">[Fixed]: File Format and Extension of [filename] don&#8217;t Match. The File could be Corrupted or Unsafe<\/span><\/a><\/p>\n","protected":false},"author":82,"featured_media":151407,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[11],"tags":[5517],"class_list":["post-151235","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-file-repair","tag-excel-repair","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>File Format and Extension of [filename] don&#039;t Match in Excel File<\/title>\n<meta name=\"description\" content=\"Learn causes and methods to fix Excel File format and extension of [filename] don&#039;t match. The file could be corrupted or unsafe error.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"File Format and Extension of [filename] don&#039;t Match in Excel File\" \/>\n<meta property=\"og:description\" content=\"Learn causes and methods to fix Excel File format and extension of [filename] don&#039;t match. The file could be corrupted or unsafe error.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/\" \/>\n<meta property=\"og:site_name\" content=\"Stellar Data Recovery Blog\" \/>\n<meta property=\"article:published_time\" content=\"2023-10-12T06:03:11+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-05-08T08:57:34+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/Fixed-File-format-and-extension-of-filename-dont-match-The-file-could-be-corrupted-or-unsafe.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"600\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Monika Dadool\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Monika Dadool\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"7 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/\"},\"author\":{\"name\":\"Monika Dadool\",\"@id\":\"https:\/\/www.stellarinfo.com\/blog\/#\/schema\/person\/02a465e9b5b4912eafedd1ae248558fd\"},\"headline\":\"[Fixed]: File Format and Extension of [filename] don&#8217;t Match. The File could be Corrupted or Unsafe\",\"datePublished\":\"2023-10-12T06:03:11+00:00\",\"dateModified\":\"2024-05-08T08:57:34+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/\"},\"wordCount\":1004,\"commentCount\":1,\"image\":{\"@id\":\"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/Fixed-File-format-and-extension-of-filename-dont-match-The-file-could-be-corrupted-or-unsafe.jpg\",\"keywords\":[\"Excel Repair\"],\"articleSection\":[\"MS Office File Repair\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/\",\"url\":\"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/\",\"name\":\"File Format and Extension of [filename] don't Match in Excel File\",\"isPartOf\":{\"@id\":\"https:\/\/www.stellarinfo.com\/blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/Fixed-File-format-and-extension-of-filename-dont-match-The-file-could-be-corrupted-or-unsafe.jpg\",\"datePublished\":\"2023-10-12T06:03:11+00:00\",\"dateModified\":\"2024-05-08T08:57:34+00:00\",\"author\":{\"@id\":\"https:\/\/www.stellarinfo.com\/blog\/#\/schema\/person\/02a465e9b5b4912eafedd1ae248558fd\"},\"description\":\"Learn causes and methods to fix Excel File format and extension of [filename] don't match. The file could be corrupted or unsafe error.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/#primaryimage\",\"url\":\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/Fixed-File-format-and-extension-of-filename-dont-match-The-file-could-be-corrupted-or-unsafe.jpg\",\"contentUrl\":\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/Fixed-File-format-and-extension-of-filename-dont-match-The-file-could-be-corrupted-or-unsafe.jpg\",\"width\":1000,\"height\":600,\"caption\":\"[Fixed] File format and extension of [filename] don't match The file could be corrupted or unsafe\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.stellarinfo.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"[Fixed]: File Format and Extension of [filename] don&#8217;t Match. The File could be Corrupted or Unsafe\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.stellarinfo.com\/blog\/#website\",\"url\":\"https:\/\/www.stellarinfo.com\/blog\/\",\"name\":\"Stellar Data Recovery Blog\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.stellarinfo.com\/blog\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.stellarinfo.com\/blog\/#\/schema\/person\/02a465e9b5b4912eafedd1ae248558fd\",\"name\":\"Monika Dadool\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.stellarinfo.com\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/7d22d2cc256776033dcf284e9c6b96fcf19473429aa25ea91b3f7561ae5e8b7a?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/7d22d2cc256776033dcf284e9c6b96fcf19473429aa25ea91b3f7561ae5e8b7a?s=96&d=mm&r=g\",\"caption\":\"Monika Dadool\"},\"description\":\"Monika Dadool is a Senior Content Writer at Stellar with over 5 years of experience in technical writing. She is a tech enthusiast and expert who specializes in writing about SQL Server, MySQL Server, MariaDB Server, Microsoft Access, Active Directory, email recovery, Microsoft 365, pattern recognition, machine learning, data recovery, file repair, and operating systems like Linux, Windows, and Mac. She also writes about accounting software such as QuickBooks and Sage 50, as well as web-scripting languages like HTML, JavaScript, Python, PHP, Visual Basic, ASP.NET, and AJAX. Monika is passionate about researching and exploring new technologies, and she enjoys developing engaging technical blogs that help organizations and database administrators resolve various issues. When she's not creating content, you can find her on social media, watching web series, reading books, or exploring new food recipes.\",\"sameAs\":[\"https:\/\/www.linkedin.com\/in\/monika-dadool-105a87163\/\"],\"url\":\"https:\/\/www.stellarinfo.com\/blog\/author\/monika\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"File Format and Extension of [filename] don't Match in Excel File","description":"Learn causes and methods to fix Excel File format and extension of [filename] don't match. The file could be corrupted or unsafe error.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/","og_locale":"en_US","og_type":"article","og_title":"File Format and Extension of [filename] don't Match in Excel File","og_description":"Learn causes and methods to fix Excel File format and extension of [filename] don't match. The file could be corrupted or unsafe error.","og_url":"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/","og_site_name":"Stellar Data Recovery Blog","article_published_time":"2023-10-12T06:03:11+00:00","article_modified_time":"2024-05-08T08:57:34+00:00","og_image":[{"width":1000,"height":600,"url":"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/Fixed-File-format-and-extension-of-filename-dont-match-The-file-could-be-corrupted-or-unsafe.jpg","type":"image\/jpeg"}],"author":"Monika Dadool","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Monika Dadool","Est. reading time":"7 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/#article","isPartOf":{"@id":"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/"},"author":{"name":"Monika Dadool","@id":"https:\/\/www.stellarinfo.com\/blog\/#\/schema\/person\/02a465e9b5b4912eafedd1ae248558fd"},"headline":"[Fixed]: File Format and Extension of [filename] don&#8217;t Match. The File could be Corrupted or Unsafe","datePublished":"2023-10-12T06:03:11+00:00","dateModified":"2024-05-08T08:57:34+00:00","mainEntityOfPage":{"@id":"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/"},"wordCount":1004,"commentCount":1,"image":{"@id":"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/#primaryimage"},"thumbnailUrl":"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/Fixed-File-format-and-extension-of-filename-dont-match-The-file-could-be-corrupted-or-unsafe.jpg","keywords":["Excel Repair"],"articleSection":["MS Office File Repair"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/","url":"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/","name":"File Format and Extension of [filename] don't Match in Excel File","isPartOf":{"@id":"https:\/\/www.stellarinfo.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/#primaryimage"},"image":{"@id":"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/#primaryimage"},"thumbnailUrl":"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/Fixed-File-format-and-extension-of-filename-dont-match-The-file-could-be-corrupted-or-unsafe.jpg","datePublished":"2023-10-12T06:03:11+00:00","dateModified":"2024-05-08T08:57:34+00:00","author":{"@id":"https:\/\/www.stellarinfo.com\/blog\/#\/schema\/person\/02a465e9b5b4912eafedd1ae248558fd"},"description":"Learn causes and methods to fix Excel File format and extension of [filename] don't match. The file could be corrupted or unsafe error.","breadcrumb":{"@id":"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/#primaryimage","url":"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/Fixed-File-format-and-extension-of-filename-dont-match-The-file-could-be-corrupted-or-unsafe.jpg","contentUrl":"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/10\/Fixed-File-format-and-extension-of-filename-dont-match-The-file-could-be-corrupted-or-unsafe.jpg","width":1000,"height":600,"caption":"[Fixed] File format and extension of [filename] don't match The file could be corrupted or unsafe"},{"@type":"BreadcrumbList","@id":"https:\/\/www.stellarinfo.com\/blog\/fixed-file-format-and-extension-of-filename-dont-match-the-file\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.stellarinfo.com\/blog\/"},{"@type":"ListItem","position":2,"name":"[Fixed]: File Format and Extension of [filename] don&#8217;t Match. The File could be Corrupted or Unsafe"}]},{"@type":"WebSite","@id":"https:\/\/www.stellarinfo.com\/blog\/#website","url":"https:\/\/www.stellarinfo.com\/blog\/","name":"Stellar Data Recovery Blog","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.stellarinfo.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/www.stellarinfo.com\/blog\/#\/schema\/person\/02a465e9b5b4912eafedd1ae248558fd","name":"Monika Dadool","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.stellarinfo.com\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/7d22d2cc256776033dcf284e9c6b96fcf19473429aa25ea91b3f7561ae5e8b7a?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/7d22d2cc256776033dcf284e9c6b96fcf19473429aa25ea91b3f7561ae5e8b7a?s=96&d=mm&r=g","caption":"Monika Dadool"},"description":"Monika Dadool is a Senior Content Writer at Stellar with over 5 years of experience in technical writing. She is a tech enthusiast and expert who specializes in writing about SQL Server, MySQL Server, MariaDB Server, Microsoft Access, Active Directory, email recovery, Microsoft 365, pattern recognition, machine learning, data recovery, file repair, and operating systems like Linux, Windows, and Mac. She also writes about accounting software such as QuickBooks and Sage 50, as well as web-scripting languages like HTML, JavaScript, Python, PHP, Visual Basic, ASP.NET, and AJAX. Monika is passionate about researching and exploring new technologies, and she enjoys developing engaging technical blogs that help organizations and database administrators resolve various issues. When she's not creating content, you can find her on social media, watching web series, reading books, or exploring new food recipes.","sameAs":["https:\/\/www.linkedin.com\/in\/monika-dadool-105a87163\/"],"url":"https:\/\/www.stellarinfo.com\/blog\/author\/monika\/"}]}},"_links":{"self":[{"href":"https:\/\/www.stellarinfo.com\/blog\/wp-json\/wp\/v2\/posts\/151235","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.stellarinfo.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.stellarinfo.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.stellarinfo.com\/blog\/wp-json\/wp\/v2\/users\/82"}],"replies":[{"embeddable":true,"href":"https:\/\/www.stellarinfo.com\/blog\/wp-json\/wp\/v2\/comments?post=151235"}],"version-history":[{"count":11,"href":"https:\/\/www.stellarinfo.com\/blog\/wp-json\/wp\/v2\/posts\/151235\/revisions"}],"predecessor-version":[{"id":166778,"href":"https:\/\/www.stellarinfo.com\/blog\/wp-json\/wp\/v2\/posts\/151235\/revisions\/166778"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.stellarinfo.com\/blog\/wp-json\/wp\/v2\/media\/151407"}],"wp:attachment":[{"href":"https:\/\/www.stellarinfo.com\/blog\/wp-json\/wp\/v2\/media?parent=151235"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.stellarinfo.com\/blog\/wp-json\/wp\/v2\/categories?post=151235"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.stellarinfo.com\/blog\/wp-json\/wp\/v2\/tags?post=151235"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}