{"id":157811,"date":"2023-12-26T04:58:10","date_gmt":"2023-12-26T04:58:10","guid":{"rendered":"https:\/\/www.stellarinfo.com\/blog\/?p=157811"},"modified":"2026-02-12T10:52:01","modified_gmt":"2026-02-12T10:52:01","slug":"fix-invalid-ms-dos-error-windows-10-11","status":"publish","type":"post","link":"https:\/\/www.stellarinfo.com\/blog\/fix-invalid-ms-dos-error-windows-10-11\/","title":{"rendered":"[FIXED] \u2013 Invalid MS-DOS Function Error on Windows 10\/11"},"content":{"rendered":"<?xml encoding=\"utf-8\" ?><?xml encoding=\"utf-8\" ?><p>Moving, copying, or deleting files are some of the basic functions of a Windows computer. An unusual error &ndash; &lsquo;<strong>Invalid MS-DOS function<\/strong>&rsquo; has recently come into light, bugging Windows 10\/11 users trying to copy or delete a file from one storage media to another.<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"561\" height=\"326\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/12\/error-3.jpg\" alt=\"invalid ms dos function error on windows \" class=\"wp-image-157813 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/12\/error-3.jpg 561w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/12\/error-3-300x174.jpg 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/12\/error-3-150x87.jpg 150w\" sizes=\"auto, (max-width: 561px) 100vw, 561px\" \/><\/figure>\n<\/div><p>This prevents users from copying, moving or deleting the files causing users to get confused. Let&rsquo;s read further to see what brings up this error and how can it be fixed.<\/p><h2 class=\"wp-block-heading\" id=\"why-does-the-invalid-ms-dos-function-error-message-occur?\">Why does the Invalid MS-DOS Function error message occur?<\/h2><p>There are multiple reasons, ranging from corrupted files or corrupted drive sectors to malfunctioning media drive or file system errors, etc. triggering the computer to show the Invalid MS-DOS Function error message. Such reasons affect the core functionalities as mentioned earlier and stall the work. They can also put the data inside the drives at risk.<\/p><p>Listed below are some of the major reasons behind the Invalid MS-DOS Function error &ndash;<\/p><ul class=\"wp-block-list\">\n<li>Damaged\/corrupted file system<\/li>\n\n\n\n<li>Incompatible source\/destination drive format<\/li>\n\n\n\n<li>Corrupted files<\/li>\n\n\n\n<li>Bad sectors<\/li>\n\n\n\n<li>Corrupted\/damaged MFT<\/li>\n<\/ul><h2 class=\"wp-block-heading\" id=\"methods-to-fix-the-invalid-ms-dos-function-error\">Methods to Fix the Invalid MS-DOS Function Error<\/h2><p>In this section, we will discuss some methods you can try to fix the Invalid MS-DOS Function on your Windows 10\/11 computer.<\/p><h3 class=\"wp-block-heading\" id=\"h-method-1-format-the-destination-drive\">Method 1: Format the Destination Drive<\/h3><p>An incompatible format of the destination drive can sometimes prevent you from copying files onto it leading to the Invalid MS-DOS Function error message. You can fix this by formatting the destination drive to the exact same format as the source drive.<\/p><p>However, in case there is some data or files on it, take a backup of them and then format the destination drive. In case you have accidentally formatted a drive with data on it, use a <strong>data recovery software<\/strong> to <a href=\"https:\/\/www.stellarinfo.com\/blog\/recover-data-after-formatting-drives\/\" target=\"_blank\" rel=\"noreferrer noopener\">retrieve your lost files from the formatted HDD<\/a>. But there is a catch, if the data has been overwritten, the chances of recovering lost files will become low. Hence, stop using the drive as soon as you can.<\/p><h3 class=\"wp-block-heading\" id=\"h-method-2-boot-your-windows-pc-in-safe-mode\">Method 2: Boot your Windows PC in Safe Mode<\/h3><p>If there are some conflicts or bugs that might be causing the Invalid MS-DOS Function error on your computer, you can reboot your PC in safe mode to eliminate any triggers and bugs. Safe mode allows only a minimal set of processes and important applications to run while booting the computer. This mode enables users to circle out the reason behind errors and fix them in time.<\/p><p>You can do this to resolve the Invalid MS-DOS Function error message on your Windows 10\/11 PC. Follow this <a href=\"https:\/\/support.hp.com\/bg-en\/document\/ish_5000477-5000532-16\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">guide<\/a> to boot your computer into safe mode.<\/p><h3 class=\"wp-block-heading\" id=\"h-method-3-use-the-registry-editor\">Method 3: Use the Registry Editor<\/h3><p>Sometimes, tweaking registry keys can help you solve issues like the Invalid MS-DOS Function error message. However, make sure to take a <a href=\"https:\/\/support.microsoft.com\/en-au\/topic\/how-to-back-up-and-restore-the-registry-in-windows-855140ad-e318-2a13-2829-d428a2ab0692#:~:text=Back%20up%20the%20registry%20manually&amp;text=In%20Registry%20Editor%2C%20locate%20and,in%20the%20File%20name%20field.\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">backup of the registry keys<\/a> before proceeding with editing them as any wrong move can lead to more unexpected crashes, BSoDs, etc. Once you have taken a backup of the registry keys, proceed with the steps mentioned below to tweak the registry file for fixing the Invalid MS-DOS Function error &ndash;<\/p><ul class=\"wp-block-list\">\n<li>Press <strong>WINDOWS + R<\/strong> to open <strong>Run<\/strong>.<\/li>\n\n\n\n<li>Type and <strong>regedit<\/strong> and press <strong>Enter<\/strong>.<\/li>\n\n\n\n<li>Navigate to the following address &ndash; <strong>Computer\\HKEY_LOCAL_MACHINE\\SOFTWARE\\Policies\\Microsoft\\Windows\\System<\/strong><\/li>\n\n\n\n<li>Right-click in the right hand side pane.<\/li>\n\n\n\n<li>Click on <strong>New<\/strong> &gt; <strong>DWORD (32-bit) Value<\/strong>.<\/li>\n<\/ul><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"750\" height=\"319\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/12\/mark-address-system-dword.jpg\" alt=\"create a new registry key in the registry editor\" class=\"wp-image-157820 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/12\/mark-address-system-dword.jpg 750w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/12\/mark-address-system-dword-300x128.jpg 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/12\/mark-address-system-dword-150x64.jpg 150w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/figure>\n<\/div><ul class=\"wp-block-list\">\n<li>Rename the newly created key as &ndash; <strong>CopyFileBufferedSynchronousIo<\/strong>.<\/li>\n\n\n\n<li>Right-click on it and click on <strong>Modify<\/strong>.<\/li>\n<\/ul><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"615\" height=\"190\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/12\/mark-modify.jpg\" alt=\"modify the newly created registry key\" class=\"wp-image-157821 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/12\/mark-modify.jpg 615w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/12\/mark-modify-300x93.jpg 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/12\/mark-modify-150x46.jpg 150w\" sizes=\"auto, (max-width: 615px) 100vw, 615px\" \/><\/figure>\n<\/div><ul class=\"wp-block-list\">\n<li>Enter <strong>1<\/strong> as Value data.<\/li>\n\n\n\n<li>Press <strong>OK<\/strong> and exit the registry editor.<\/li>\n<\/ul><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"331\" height=\"199\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/12\/mark-1-ok.jpg\" alt=\"edit the registry value to fix the invalid ms dos function error on windows computers\" class=\"wp-image-157822 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/12\/mark-1-ok.jpg 331w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/12\/mark-1-ok-300x180.jpg 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/12\/mark-1-ok-150x90.jpg 150w\" sizes=\"auto, (max-width: 331px) 100vw, 331px\" \/><\/figure>\n<\/div><ul class=\"wp-block-list\">\n<li><strong>Restart<\/strong> your computer.<\/li>\n<\/ul><h3 class=\"wp-block-heading\" id=\"h-method-4-perform-sfc-scan\">Method 4: Perform SFC Scan<\/h3><p>Outdated or corrupted system files can trigger various errors and bugs on a Windows 10\/11 PC, such as the Invalid MS-DOS Function error. You can fix this error (that is preventing you from copying or deleting files) by performing a system file check using CMD. This will also fix any corrupt, damaged, or missing files quickly. To do this &ndash;<\/p><ul class=\"wp-block-list\">\n<li>Press WINDOWS + R and type CMD.<\/li>\n\n\n\n<li>Press <strong>CTRL + SHIFT + ENTER<\/strong> to open it as administrator.<\/li>\n\n\n\n<li>Type <strong>SFC \/scannow<\/strong> in the terminal and press <strong>Enter<\/strong>.<\/li>\n<\/ul><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"116\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/12\/mark-sfc.jpg\" alt=\"perform sfc scan to fix system files causing invalid ms dos function error message\" class=\"wp-image-157823 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/12\/mark-sfc.jpg 400w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/12\/mark-sfc-300x87.jpg 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2023\/12\/mark-sfc-150x44.jpg 150w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/figure>\n<\/div><ul class=\"wp-block-list\">\n<li>Let the scan complete.<\/li>\n\n\n\n<li>Once the scan is complete. Exit the CMD and restart the computer.<\/li>\n<\/ul><h3 class=\"wp-block-heading\" id=\"h-method-5-use-the-chkdsk-command\">Method 5: Use the CHKDSK Command<\/h3><p>Issues like bad sectors can cause a storage drive to malfunction and show errors like Invalid MS-DOS Function. If you see this error while trying to copy or delete a file from a storage device, use the <a href=\"https:\/\/www.stellarinfo.com\/blog\/fix-hard-drive-with-chkdsk\/\" target=\"_blank\" rel=\"noreferrer noopener\">CHKDSK command<\/a> to fix this problem.<\/p><p><strong>CAUTION &ndash; As the CHKDSK marks bad sectors, there are chances that any data inside them can get lost permanently. Hence, to avoid data loss, take a backup before proceeding. And if you have <\/strong><a href=\"https:\/\/www.stellarinfo.com\/blog\/how-to-recover-files-which-are-lost-after-using-chkdsk-command\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>lost data due to CHKDSK command<\/strong><\/a><strong>, use a powerful <a href=\"https:\/\/www.stellarinfo.com\/windows-data-recovery.php\" target=\"_blank\" rel=\"noreferrer noopener\">Windows data recovery software<\/a> like Stellar Data Recoveryto get your data back quickly.<\/strong><\/p><h2 class=\"wp-block-heading\" id=\"conclusion\">Conclusion<\/h2><p>The above-mentioned workarounds for the Invalid MS-DOS Function error message will help you resolve this error in no time. However, even after employing all the methods, if you are still encountering this error message, the file\/s that you are trying to transfer or delete might be corrupt.<\/p><p>Let us know in the comments which method helped you resolve this issue.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Moving, copying, or deleting files are some of the basic functions of&hellip; <a class=\"more-link\" href=\"https:\/\/www.stellarinfo.com\/blog\/fix-invalid-ms-dos-error-windows-10-11\/\">Continue reading <span class=\"screen-reader-text\">[FIXED] \u2013 Invalid MS-DOS Function Error on Windows 10\/11<\/span><\/a><\/p>\n","protected":false},"author":83,"featured_media":157834,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[692],"tags":[5626,5087],"class_list":["post-157811","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-windows-data-recovery-standard","tag-windows-data-recovery-standard","tag-windows-errors","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - 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