{"id":5526,"date":"2017-03-14T06:57:56","date_gmt":"2017-03-14T06:57:56","guid":{"rendered":"https:\/\/www.stellarinfo.com\/blog\/?p=5526"},"modified":"2024-12-23T11:22:04","modified_gmt":"2024-12-23T11:22:04","slug":"outlook-wont-open-cannot-start-outlook","status":"publish","type":"post","link":"https:\/\/www.stellarinfo.com\/blog\/outlook-wont-open-cannot-start-outlook\/","title":{"rendered":"Error Solved: \u201cMicrosoft Outlook Won\u2019t Open or Start\u201d"},"content":{"rendered":"<?xml encoding=\"utf-8\" ?><?xml encoding=\"utf-8\" ?><p>Sometimes, you may encounter a situation when your&nbsp;<strong>Microsoft Outlook won&rsquo;t open or start<\/strong>&nbsp;and returns an error message that reads:<\/p><p><strong><em>&ldquo;<\/em><\/strong><em><strong>Cannot start Microsoft Outlook. Cannot open the Outlook window. The set of folders cannot be opened. The operation failed<\/strong><\/em><strong><em>.&rdquo;<\/em><\/strong><\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"496\" height=\"172\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/Cannot-Start-Microsoft-Outlook-Error-Alert-Box.png\" alt=\"Cannot Start Microsoft Outlook Error Alert Box\" class=\"wp-image-76674 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/Cannot-Start-Microsoft-Outlook-Error-Alert-Box.png 496w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/Cannot-Start-Microsoft-Outlook-Error-Alert-Box-300x104.png 300w\" sizes=\"auto, (max-width: 496px) 100vw, 496px\" \/><\/figure>\n<\/div><p class=\"has-text-align-center\"><em>Cannot Start Microsoft Outlook Error Alert Box<\/em><\/p><h2 class=\"wp-block-heading\" id=\"why-my-outlook-won&rsquo;t-open?\"><strong>Why My Outlook Won&rsquo;t Open?<\/strong><\/h2><p>Following are some reasons that may cause Microsoft Outlook not opening issue:<\/p><ul class=\"wp-block-list\">\n<li>Outlook PST file is accidentally deleted or damaged<\/li>\n\n\n\n<li>Outlook Profile belongs to an&nbsp;older&nbsp;Outlook version<\/li>\n\n\n\n<li>Incorrect configuration of the application<\/li>\n\n\n\n<li>Improper installation of the application<\/li>\n\n\n\n<li>Virus or malware infection<\/li>\n\n\n\n<li>Internal registry conflict<\/li>\n\n\n\n<li>Installation of conflicting add-ins<\/li>\n<\/ul><div class=\"note-alert\">\n        <div class=\"tips_container\">\n            <img decoding=\"async\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2024\/05\/tips-con.png\" class=\"img-fluid apply-gradient-on-post-images\" alt=\"tips\">\n            <div class=\"tips_content ml-3 pt-3\">\n                <span class=\"f700 fmont\"> Tip &ndash; <\/span>\n                Corruption in Outlook data file (PST) could be the reason why you&nbsp;<strong>cannot start Microsoft Outlook<\/strong>. You can repair the corrupted PST by using the built-in Microsoft repair utility but the process is time-consuming and may result in data inconsistency. Use&nbsp;<a href=\"https:\/\/www.stellarinfo.com\/outlook-pst-file-recovery.php\" target=\"_blank\" rel=\"noreferrer noopener\">Stellar Repair for Outlook<\/a>&nbsp;software to repair PST file and recover all the mailbox items, maintaining data integrity.\n        <\/div>\n    <\/div>\n    <\/div><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><a href=\"https:\/\/cloud.stellarinfo.com\/StellarRepairforOutlook-Professional-Blog.exe\"><img decoding=\"async\" class=\"apply-gradient-on-post-images\" src=\"https:\/\/www.stellarinfo.com\/images\/free-download-windows.png\" alt=\"free download for Windows\"><\/a><\/figure>\n<\/div><h2 class=\"wp-block-heading\" id=\"methods-to-solve-&lsquo;outlook-won&rsquo;t-open-or-start&rsquo;-issue\"><strong>Methods to Solve &lsquo;Outlook Won&rsquo;t Open or Start&rsquo; Issue<\/strong><\/h2><p>You can&rsquo;t access Microsoft Outlook emails and other items unless the &lsquo;<a href=\"https:\/\/www.stellarinfo.com\/blog\/outlook-wont-open-cannot-start-outlook\/\" target=\"_blank\" rel=\"noreferrer noopener\">Outlook not opening<\/a>&rsquo; issue is resolved. Let&rsquo;s discuss some methods to fix this issue:<\/p><h3 class=\"wp-block-heading\" id=\"h-method-1-update-outlook-and-windows\"><strong>Method 1 &ndash; Update Outlook and Windows<\/strong><\/h3><p>If you are wondering&nbsp;<strong>why won&rsquo;t Outlook open<\/strong>, one of the reasons is that your Outlook application or Windows OS is not up-to-date. To resolve the issue, you just need to update the Outlook application or install latest Windows OS updates.<\/p><p>To update Outlook:<\/p><ol style=\"list-style-type:1\" class=\"wp-block-list\">\n<li>Go to&nbsp;<strong>File<\/strong>&nbsp;&gt;&nbsp;<strong>Office Account<\/strong><strong>.<\/strong><\/li>\n\n\n\n<li>Click&nbsp;<strong>Update Options<\/strong> and then click&nbsp;<strong>Update Now<\/strong><strong>.<\/strong><\/li>\n<\/ol><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"602\" height=\"323\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/image-10.png\" alt=\"Outlook Update Options\" class=\"wp-image-76589 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/image-10.png 602w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/image-10-300x161.png 300w\" sizes=\"auto, (max-width: 602px) 100vw, 602px\" \/><\/figure>\n<\/div><p class=\"has-text-align-center\">Outlook Update Options<\/p><p>To install latest Windows updates manually (if automatic updates option is not configured), follow the given steps:<\/p><ol style=\"list-style-type:1\" class=\"wp-block-list\">\n<li>Go to&nbsp;<strong>Settings<\/strong><strong>.<\/strong><\/li>\n\n\n\n<li>Select&nbsp;<strong>Update and Recovery <\/strong>and click&nbsp;<strong>how updates get installed<\/strong>.<\/li>\n\n\n\n<li>Turn on&nbsp;<strong>automatic updates<\/strong><strong>.<\/strong><\/li>\n<\/ol><p>Now, try to open your Outlook application and see if the &lsquo;Cannot start MS Outlook&rsquo; error is resolved. If not, move to the next method.<\/p><p class=\"note-alert\"><strong>Note:<\/strong>&nbsp;In some situations, Outlook will not open if there&rsquo;s compatibility issue between an installed antivirus program and Outlook. According to Microsoft, updating the antivirus problem might help fix the error.<\/p><h3 class=\"wp-block-heading\" id=\"h-method-2-launch-outlook-in-safe-mode\"><strong>Method 2 &ndash; Launch Outlook in &ldquo;Safe Mode&rdquo;<\/strong><\/h3><p>When you launch Outlook in&nbsp;safe mode, it starts with only the basic setup, without any add-ins. This helps you to check if a faulty or damaged add-in is causing the &lsquo;<strong>Cannot Start Microsoft<\/strong>&nbsp;<strong>Outlook<\/strong>&rsquo; error.<\/p><p>Steps to launch Outlook in safe mode are:<\/p><ul class=\"wp-block-list\">\n<li>Go to&nbsp;<strong>Start<\/strong>&nbsp;&gt;&nbsp;<strong>Run<\/strong>&nbsp;or Press&nbsp;<strong>Windows + R<\/strong>&nbsp;keys to open Run dialog box.<\/li>\n<\/ul><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"293\" height=\"463\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/launching-run-utility.jpg\" alt=\"Launching Run utility\" class=\"wp-image-76675 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/launching-run-utility.jpg 293w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/launching-run-utility-190x300.jpg 190w\" sizes=\"auto, (max-width: 293px) 100vw, 293px\" \/><\/figure>\n<\/div><p class=\"has-text-align-center\"><em>Launching Run utility<\/em><\/p><ul class=\"wp-block-list\">\n<li>Type&nbsp;&lsquo;<em>Outlook.exe \/safe&rsquo;<\/em>&nbsp;in the&nbsp;<strong>Run<\/strong>&nbsp;dialog box and click&nbsp;<strong>OK&nbsp;<\/strong>or hit&nbsp;<strong>Enter<\/strong>.<\/li>\n<\/ul><p class=\"note-alert\"><strong>Note:<\/strong>&nbsp;Make sure to keep space when typing &lsquo;Outlook.exe&rsquo; and &lsquo;\/safe&rsquo;.<br><br><\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"209\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/Outlook-in-safe-mode.jpg\" alt=\"Run Outlook in safe mode\" class=\"wp-image-76676 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/Outlook-in-safe-mode.jpg 400w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/Outlook-in-safe-mode-300x157.jpg 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/figure>\n<\/div><p class=\"has-text-align-center\"><em>Running Outlook in safe mode (Outlook.exe \/safe)<\/em><\/p><p>If Outlook starts in safe mode, a faulty add-in(s) is likely responsible for the issue. If Outlook won&rsquo;t open in safe mode, skip to the next method.<\/p><p>To disable the faulty add-in(s), follow these steps:<\/p><ul class=\"wp-block-list\">\n<li>In the Outlook menu, go to&nbsp;<strong>File&nbsp;<\/strong>&gt;&nbsp;<strong>Options.<\/strong><\/li>\n\n\n\n<li>In Outlook Options window, click&nbsp;<strong>Add-ins<\/strong>&nbsp;from the left-side panel and then select&nbsp;<strong>COM Add-ins<\/strong>&nbsp;in the&nbsp;<strong>Manage<\/strong>&nbsp;field. Click&nbsp;<strong>Go<\/strong>.<\/li>\n<\/ul><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"503\" height=\"432\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/checking-the-installed-Outlook-add-ins.jpg\" alt=\"Checking the installed Outlook add-ins\" class=\"wp-image-76677 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/checking-the-installed-Outlook-add-ins.jpg 503w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/checking-the-installed-Outlook-add-ins-300x258.jpg 300w\" sizes=\"auto, (max-width: 503px) 100vw, 503px\" \/><\/figure>\n<\/div><p class=\"has-text-align-center\"><em>Checking the installed Outlook add-ins<\/em><\/p><ul class=\"wp-block-list\">\n<li>Unselect all the add-ins checkboxes and select&nbsp;<strong>OK<\/strong>.<\/li>\n\n\n\n<li>Restart Outlook in normal mode.<\/li>\n<\/ul><p>If this works, enable the add-ins one-by-one and keep restarting Outlook after enabling each add-in. Doing so will help you identify the faulty add-in due to which you&nbsp;<strong>cannot start Microsoft Outlook<\/strong>.<\/p><h3 class=\"wp-block-heading\" id=\"h-3-repair-ms-office\"><strong>3. Repair MS Office<\/strong><\/h3><p>Sometimes, a problem with MS Office installation might stop Outlook from responding and make you wonder&nbsp;<strong>why won&rsquo;t Outlook open<\/strong>. In that case, you can use the built-in Microsoft Office repair tool to repair the program. Follow these steps:<\/p><ol style=\"list-style-type:1\" class=\"wp-block-list\">\n<li>Close all the running&nbsp;Microsoft Office applications.<\/li>\n\n\n\n<li>Go to&nbsp;<strong>Control Panel<\/strong> and click&nbsp;<strong>Programs and Features<\/strong>.<\/li>\n<\/ol><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"484\" height=\"406\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/programs-and-features-in-control-panel.jpg\" alt=\"Programs and Features in Control Panel\" class=\"wp-image-76678 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/programs-and-features-in-control-panel.jpg 484w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/programs-and-features-in-control-panel-300x252.jpg 300w\" sizes=\"auto, (max-width: 484px) 100vw, 484px\" \/><\/figure>\n<\/div><p class=\"has-text-align-center\"><em>Programs and Features in Control Panel<\/em><\/p><ul class=\"wp-block-list\">\n<li>Find your&nbsp;<strong>Microsoft Office&nbsp;<\/strong>version, right-click on it, and then select&nbsp;<strong>Change<\/strong>.<\/li>\n<\/ul><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"706\" height=\"452\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/find-ms-office-in-programs-and-features.jpg\" alt=\"Programs and Features - uninstall or change a program\" class=\"wp-image-76679 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/find-ms-office-in-programs-and-features.jpg 706w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/find-ms-office-in-programs-and-features-300x192.jpg 300w\" sizes=\"auto, (max-width: 706px) 100vw, 706px\" \/><\/figure>\n<\/div><p class=\"has-text-align-center\">Find MS Office in Programs and Features<\/p><ul class=\"wp-block-list\">\n<li>Repair your MS Office program. However, the steps will vary depending on whether you&rsquo;ve Click-to-Run or MSI-based Office installation type.<\/li>\n<\/ul><p>For&nbsp;<strong>Click-to-Run installation type<\/strong>, do the following:<\/p><ul class=\"wp-block-list\">\n<li>When &lsquo;How would you like to repair your Office programs&rsquo; window pops-up, choose Online Repair and then select&nbsp;<strong>Repair<\/strong>.<\/li>\n<\/ul><p>For&nbsp;<strong>MSI-based installation type<\/strong>:<\/p><ul class=\"wp-block-list\">\n<li>From &lsquo;Change your installation&rsquo; dialog box, select&nbsp;<strong>Repair<\/strong> and then hit&nbsp;<strong>Continue<\/strong>.<\/li>\n<\/ul><ul class=\"wp-block-list\">\n<li>Follow the instructions on your screen to complete the MS Office repair process.<\/li>\n<\/ul><p>Once the repair process is complete, try to launch and open Outlook. If Outlook is still not opening, move on to the next method.<\/p><h3 class=\"wp-block-heading\" id=\"h-4-restore-delete-navigation-pane-configuration-file\"><strong>4.<\/strong>&nbsp;<strong>Restore\/Delete Navigation Pane Configuration File<\/strong><\/h3><p>A common reason behind &ldquo;Microsoft Outlook won&rsquo;t Open&rdquo; error is corruption in&nbsp;Navigation Pane&nbsp;Configuration File i.e.&nbsp;<em>profilename.xml<\/em>.&nbsp;If the file size is 0 KB, this means it&rsquo;s corrupt. In such a case, you can restore the file by following these steps:<\/p><ul class=\"wp-block-list\">\n<li>Close&nbsp;Microsoft Outlook.<\/li>\n\n\n\n<li>Go to&nbsp;<strong>Start<\/strong>&nbsp;&gt;&nbsp;<strong>Run<\/strong>.<\/li>\n<\/ul><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"293\" height=\"463\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/launching-run-utility-from-start-menu-2.jpg\" alt=\"Launching Run utility from Start menu\" class=\"wp-image-76680 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/launching-run-utility-from-start-menu-2.jpg 293w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/launching-run-utility-from-start-menu-2-190x300.jpg 190w\" sizes=\"auto, (max-width: 293px) 100vw, 293px\" \/><\/figure>\n<\/div><p class=\"has-text-align-center\"><em>Launching Run utility from Start menu<\/em><\/p><ul class=\"wp-block-list\">\n<li>In the Run dialog box, type&nbsp;<strong>outlook.exe \/resetnavpane<\/strong>.<\/li>\n<\/ul><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"208\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/outlook-exe-resetnavpane-in-run-input-field.jpg\" alt=\"Entering Outlook.exe \/resetnavpane in Run input field\" class=\"wp-image-76681 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/outlook-exe-resetnavpane-in-run-input-field.jpg 400w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/outlook-exe-resetnavpane-in-run-input-field-300x156.jpg 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/figure>\n<\/div><p class=\"has-text-align-center\"><em>Entering Outlook.exe \/resetnavpane in Run input field<\/em><\/p><ul class=\"wp-block-list\">\n<li>Click&nbsp;<strong>OK.<\/strong><\/li>\n<\/ul><p>If repairing the corrupted Navigation Pane Configuration File doesn&rsquo;t fix the error, you can delete it (your .pst file won&rsquo;t be affected). To do so:<\/p><ul class=\"wp-block-list\">\n<li>Go to&nbsp;<strong>Start<\/strong>&nbsp;&gt;&nbsp;<strong>Run<\/strong>.<\/li>\n\n\n\n<li>In the window that opens, type&nbsp;<strong>%appdata%\\Microsoft\\Outlook&nbsp;<\/strong>and click&nbsp;<strong>OK<\/strong>.<\/li>\n<\/ul><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"787\" height=\"358\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/appdata-in-outlook.jpg\" alt=\"Entering %appdata%\\Microsoft\\Outlook in the navigation field\" class=\"wp-image-76682 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/appdata-in-outlook.jpg 787w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/appdata-in-outlook-300x136.jpg 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/appdata-in-outlook-768x349.jpg 768w\" sizes=\"auto, (max-width: 787px) 100vw, 787px\" \/><\/figure>\n<\/div><p class=\"has-text-align-center\"><em>Entering %appdata%\\Microsoft\\Outlook&nbsp;in the navigation field<\/em><\/p><ul class=\"wp-block-list\">\n<li>You will be taken to the location of&nbsp;<strong>Microsoft Outlook configuration&nbsp;<\/strong>file.<\/li>\n<\/ul><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"790\" height=\"336\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/outlook-files-folder.jpg\" alt=\"Outlook configuration files folder\" class=\"wp-image-76683 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/outlook-files-folder.jpg 790w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/outlook-files-folder-300x128.jpg 300w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/outlook-files-folder-768x327.jpg 768w\" sizes=\"auto, (max-width: 790px) 100vw, 790px\" \/><\/figure>\n<\/div><p class=\"has-text-align-center\">Outlook files folder<\/p><ul class=\"wp-block-list\">\n<li>Search the&nbsp;<strong>xml&nbsp;<\/strong>file and delete it.<\/li>\n<\/ul><p>After performing these steps, check if the problem is fixed.<\/p><h3 class=\"wp-block-heading\" id=\"h-method-5-create-a-new-outlook-profile\"><strong>Method 5 &ndash; Create a New Outlook Profile<\/strong><\/h3><p>One of the causes behind the &ldquo;Microsoft Outlook won&rsquo;t start&rdquo; error is the corrupt Outlook profile. You can create a new Outlook profile to resolve this error. Follow these steps:<\/p><ul class=\"wp-block-list\">\n<li>Go to&nbsp;<strong>Control Panel<\/strong>.<\/li>\n\n\n\n<li>Select&nbsp;<strong>Mail option&nbsp;<\/strong>to open Mail Setup dialog box.<\/li>\n<\/ul><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"484\" height=\"407\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/mail-in-control-panel.jpg\" alt=\"mail option to mail setup\" class=\"wp-image-76684 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/mail-in-control-panel.jpg 484w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/mail-in-control-panel-300x252.jpg 300w\" sizes=\"auto, (max-width: 484px) 100vw, 484px\" \/><\/figure>\n<\/div><p class=\"has-text-align-center\"><em>Mail in Control Panel<\/em><\/p><ul class=\"wp-block-list\">\n<li>In Mail Setup &ndash; Outlook window, click on the&nbsp;<strong>Show Profiles<\/strong>&nbsp;button.<\/li>\n<\/ul><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"435\" height=\"282\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/mail-setup-dialog-box.jpg\" alt=\"Mail Setup in Outlook\" class=\"wp-image-76685 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/mail-setup-dialog-box.jpg 435w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/mail-setup-dialog-box-300x194.jpg 300w\" sizes=\"auto, (max-width: 435px) 100vw, 435px\" \/><\/figure>\n<\/div><p class=\"has-text-align-center\"><em>Mail Setup dialog box<\/em><\/p><ul class=\"wp-block-list\">\n<li>In the dialog box that opens, click&nbsp;<strong>Add&nbsp;<\/strong>to create a new profile.<\/li>\n<\/ul><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"346\" height=\"409\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/creating-a-new-profile.jpg\" alt=\"Add a new profile - outlook setup\" class=\"wp-image-76686 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/creating-a-new-profile.jpg 346w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/creating-a-new-profile-254x300.jpg 254w\" sizes=\"auto, (max-width: 346px) 100vw, 346px\" \/><\/figure>\n<\/div><p class=\"has-text-align-center\"><em>Creating a new profile in Mail<\/em><\/p><ul class=\"wp-block-list\">\n<li>Enter your&nbsp;profile name and then click&nbsp;<strong>OK<\/strong>.<\/li>\n<\/ul><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"349\" height=\"409\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/entering-mail-profile-name.jpg\" alt=\"Choose Profile name for mail setup in outlook\" class=\"wp-image-76687 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/entering-mail-profile-name.jpg 349w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/entering-mail-profile-name-256x300.jpg 256w\" sizes=\"auto, (max-width: 349px) 100vw, 349px\" \/><\/figure>\n<\/div><p class=\"has-text-align-center\"><em>Entering Mail profile name<\/em><\/p><ul class=\"wp-block-list\">\n<li>In the&nbsp;&lsquo;Auto Account Setup&rsquo;&nbsp;screen, under&nbsp;E-mail Account, fill in&nbsp;the required details, and then choose&nbsp;<strong>Next<\/strong>.<\/li>\n<\/ul><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"678\" height=\"481\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/finishing-email-account-creation.jpg\" alt=\"Auto Account Setup\" class=\"wp-image-76688 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/finishing-email-account-creation.jpg 678w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/finishing-email-account-creation-300x213.jpg 300w\" sizes=\"auto, (max-width: 678px) 100vw, 678px\" \/><\/figure>\n<\/div><p class=\"has-text-align-center\">Finishing email account creation<\/p><p class=\"note-alert\"><strong>Note:<\/strong>&nbsp;The Add Account Wizard will automatically look for your mail server settings.<\/p><ul class=\"wp-block-list\">\n<li>When prompted, click&nbsp;<strong>Finish.<\/strong>&nbsp;You can see the new profile name listed in the&nbsp;&lsquo;Mail&rsquo;&nbsp;dialog box under the&nbsp;<strong>General<\/strong>&nbsp;tab.<\/li>\n\n\n\n<li>Select&nbsp;<strong>Prompt for a profile to be used<\/strong>&nbsp;option under &lsquo;When starting Microsoft Outlook, use this profile&rsquo;, and then click&nbsp;<strong>OK<\/strong>.<\/li>\n\n\n\n<li>Restart Outlook.<\/li>\n\n\n\n<li>In the &lsquo;Choose Profile&rsquo;&nbsp;dialog box, select the new profile name that you have created and then choose&nbsp;<strong>OK<\/strong>.<\/li>\n<\/ul><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"335\" height=\"154\" src=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/selecting-the-new-profile.jpg\" alt=\"Selecting the new profile\" class=\"wp-image-76689 apply-gradient-on-post-images\" srcset=\"https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/selecting-the-new-profile.jpg 335w, https:\/\/www.stellarinfo.com\/blog\/wp-content\/uploads\/2021\/03\/selecting-the-new-profile-300x138.jpg 300w\" sizes=\"auto, (max-width: 335px) 100vw, 335px\" \/><\/figure>\n<\/div><p class=\"has-text-align-center\"><em>Selecting the new profile<\/em><\/p><p>Now try opening Outlook. If it starts normally, it means that the Outlook profile was corrupt and resulted in the &lsquo;Cannot start Outlook&rsquo; error.<\/p><h3 class=\"wp-block-heading\" id=\"h-method-6-repair-outlook-data-file\"><strong>Method 6 &ndash; Repair Outlook Data File<\/strong><\/h3><p>If none of the above method works, this means that the Outlook data file (PST) is corrupt or damaged. To repair the Outlook data file, you can use Microsoft&rsquo;s in-built recovery tool&nbsp;<strong><a href=\"https:\/\/www.stellarinfo.com\/article\/download-free-scanpst-exe.php\" target=\"_blank\" rel=\"noreferrer noopener\">Scanpst.exe<\/a><\/strong>&nbsp;(also called Inbox Repair tool) or a specialized&nbsp;PST repair software.<\/p><h5 class=\"wp-block-heading\" id=\"h-steps-to-repair-outlook-data-file-by-using-scanpst-exe\"><strong>Steps to repair Outlook data file by using Scanpst.exe:<\/strong><\/h5><ul class=\"wp-block-list\">\n<li>Exit Outlook.<\/li>\n\n\n\n<li>Locate the&nbsp;<strong>Scanpst.exe&nbsp;file.<\/strong><\/li>\n<\/ul><p><em>If you don&rsquo;t know the location of Scanpst.exe, read this:&nbsp;<\/em><em><strong><a href=\"https:\/\/www.stellarinfo.com\/blog\/find-scanpst-exe-location-in-ms-outlook\/\" target=\"_blank\" rel=\"noreferrer noopener\">How to Find Scanpst.exe Location in Outlook 2019, 2016, 2013, 2010 &amp; 2007?<\/a><\/strong><\/em><\/p><ul class=\"wp-block-list\">\n<li>Double-click&nbsp;<strong>SCANPST<\/strong>.<\/li>\n\n\n\n<li>Select&nbsp;<strong>Browse<\/strong>&nbsp;and navigate to the file that you want to repair.<\/li>\n\n\n\n<li>Select&nbsp;<strong>Start<\/strong>&nbsp;to begin scanning the corrupt PST file.<\/li>\n\n\n\n<li>Once the scanning is complete, a new screen reporting about the errors found in the file will appear.<\/li>\n\n\n\n<li>Select&nbsp;<strong>Repair<\/strong>&nbsp;to fix the errors.<\/li>\n<\/ul><p>After that, you can recover the repaired items to a new .pst file. To do so,&nbsp;<strong>follow these steps<\/strong>:<\/p><ol style=\"list-style-type:1\" class=\"wp-block-list\">\n<li>Start&nbsp;Outlook.<\/li>\n\n\n\n<li>Press<strong>&nbsp;CTRL<\/strong>+<strong>6.&nbsp;<\/strong>This will turn on the&nbsp;<strong>Folder List<\/strong>&nbsp;view.<\/li>\n\n\n\n<li>Under the&nbsp;<strong>Folder List<\/strong>, you can see a list of all the recovered data folders that include&nbsp;<em>Inbox, Outbox, Contacts, Sent Items, Calendar, Notes, Journal, Deleted Items, and Tasks<\/em>.<\/li>\n\n\n\n<li>Create a&nbsp;new PST file.<\/li>\n\n\n\n<li>Click&nbsp;<strong>Lost and Found&nbsp;<\/strong>folder and drag all the recovered data items from the folder and drop them in the new PST file.<\/li>\n\n\n\n<li>Remove the recovered PST file.<\/li>\n<\/ol><p><em>For more information on why you can&rsquo;t Start Microsoft Outlook, refer to the <a href=\"https:\/\/support.microsoft.com\/en-us\/office\/i-can-t-start-microsoft-outlook-or-receive-the-error-cannot-start-microsoft-office-outlook-cannot-open-the-outlook-window-d1f69da6-b333-4650-97bf-4d77bd7abb85#:~:text=at%20a%20time.-,In%20the%20upper%2Dleft%20corner%20of%20Outlook%2C%20choose%20File,%3E%20Options%20%3E%20Add%2Dins.&amp;text=Restart%20Outlook%20again%20and%20disable,was%20originally%20enabled%20in%20Outlook.\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Manual Guide<\/a>.<\/em><\/p><p>The Outlook Inbox Repair tool (Scanpst.exe) may help you fix the &lsquo;Outlook won&rsquo;t start&rsquo; issue. However, the built-in tool has certain limitations. You need to perform the repair process steps manually and with extra care to avoid any error. Above all, Scanpst.exe can&rsquo;t repair severely corrupt or oversized Outlook data file. To overcome such limitations and avoid the hassle of manual efforts, use advanced PST repair software, such as&nbsp;<strong>Stellar Repair for Outlook<\/strong>&nbsp;to repair severely corrupt PST files of virtually any size.<\/p><h5 class=\"wp-block-heading\" id=\"h-steps-to-repair-corrupt-pst-file-by-using-the-software\"><strong>Steps to repair corrupt PST file by using the software:<\/strong><\/h5><p><strong>Step 1:<\/strong>&nbsp;Download, install, and run<strong>&nbsp;Stellar Repair for Outlook.<\/strong><\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><a href=\"https:\/\/cloud.stellarinfo.com\/StellarRepairforOutlook-Professional-Blog.exe\"><img decoding=\"async\" class=\"apply-gradient-on-post-images\" src=\"https:\/\/www.stellarinfo.com\/images\/free-download-windows.png\" alt=\"Free Download for Windows\"><\/a><\/figure>\n<\/div><p><strong>Step 2:<\/strong>&nbsp;From the main interface,&nbsp;<strong>Browse<\/strong>&nbsp;the location of the&nbsp;<strong>PST file<\/strong>. If you don&rsquo;t know the location, click&nbsp;<strong>Find.<\/strong><\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" class=\"apply-gradient-on-post-images\" src=\"https:\/\/www.stellarinfo.com\/public\/image\/catalog\/screenshot\/pst-repair\/stellar-repair-for-outlook-browse-pstfile.png\" alt=\"Stellar Repair for Outlook select PST file  process \"><\/figure>\n<\/div><p><strong>Step 3:<\/strong>&nbsp;Select the PST file you want to repair and click&nbsp;<strong>Repair&nbsp;<\/strong>to initiate scanning.<\/p><p><strong>Step 4:<\/strong>&nbsp;When the scanning process is complete, you will see a list of all&nbsp;recoverable files and folders in the preview window. Select the files and folders you want to repair.<\/p><p><strong>Step 5:<\/strong>&nbsp;After selection, click&nbsp;<strong>Save Repaired File&nbsp;<\/strong>on&nbsp;<strong>Home&nbsp;<\/strong>menu.<\/p><p><strong>Step 6:<\/strong>&nbsp;Select the&nbsp;desired file format in which you want to save the repaired file.<\/p><p><strong>Step 7:<\/strong>&nbsp;Provide the location where you want to save the recovered files and then click&nbsp;<strong>OK.<\/strong><\/p><p>Now you can import this recovered PST file into your Outlook. This should resolve the Outlook won&rsquo;t start issue.<\/p><h4 class=\"wp-block-heading\" id=\"h-why-choose-stellar-repair-for-outlook\"><strong>Why Choose Stellar Repair for Outlook?<\/strong><strong><\/strong><\/h4><p><strong>Stellar Repair for Outlook<\/strong>&nbsp;is a powerful tool that can easily repair a corrupted or damaged Microsoft Outlook Personal Storage Table (PST) file, along with its content, such as journals, tasks, rules, contacts, emails, attachments, etc. This user-friendly&nbsp;<strong><a href=\"https:\/\/www.stellarinfo.com\/outlook-pst-file-recovery.php\" target=\"_blank\" rel=\"noreferrer noopener\">PST file recovery software<\/a><\/strong>&nbsp;efficiently scans the damaged PST file, extracts and repairs the data, and saves the data into a new PST file. You also get advanced features, such as:<\/p><ul class=\"wp-block-list\">\n<li>Repair password-protected PST files.<\/li>\n\n\n\n<li>Offer preview of email content, attachments, embedded hyperlinks, etc.<\/li>\n\n\n\n<li>Recovery of permanently deleted emails.<\/li>\n\n\n\n<li>Export repaired PST file directly to an Outlook account or Office 365.<\/li>\n\n\n\n<li>Multiple export formats for mailbox data, such as HTML, MSG, PDF, etc.<\/li>\n<\/ul><h2 class=\"wp-block-heading\" id=\"conclusion&nbsp;\"><strong>Conclusion&nbsp;<\/strong><strong><\/strong><\/h2><p>Sometimes, Microsoft Outlook might not work or throws an error, such as &lsquo;<strong>Outlook Won&rsquo;t Open<\/strong>&rsquo; when you try to open the application. However, you can fix such issues easily by following the methods mentioned in this post. In case the issue is caused by to corrupt PST file, you can use Microsoft&rsquo;s proprietary&nbsp;<strong>Inbox Repair Tool<\/strong>&nbsp;to repair it. But the tool requires manual efforts and cannot repair a severely corrupt or oversized PST file. In such a case, use a dedicated Outlook PST repair software, such as&nbsp;<strong><a href=\"https:\/\/www.stellarinfo.com\/outlook-pst-file-recovery.php\">Stellar Repair for Outlook<\/a><\/strong> to effectively repair severely corrupt PST file with a few clicks.<\/p><p>People Also Search for:<\/p><p><a href=\"https:\/\/www.stellarinfo.com\/blog\/fix-outlook-2016-search-problems\/\" target=\"_blank\" rel=\"noreferrer noopener\">How to Fix Outlook Search problem?<\/a><\/p><p><a href=\"https:\/\/www.stellarinfo.com\/blog\/how-to-deal-with-outlook-not-responding-error\/\" target=\"_blank\" rel=\"noreferrer noopener\">Microsoft Outlook Not Responding&rsquo; Error?<\/a><\/p><p><a href=\"https:\/\/www.stellarinfo.com\/blog\/outlook-inbox-repair-tool-not-responding\/\" target=\"_blank\" rel=\"noreferrer noopener\">Inbox Repair Tool not Responding?<\/a><\/p><p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sometimes, you may encounter a situation when your&nbsp;Microsoft Outlook won&rsquo;t open or&hellip; <a class=\"more-link\" href=\"https:\/\/www.stellarinfo.com\/blog\/outlook-wont-open-cannot-start-outlook\/\">Continue reading <span class=\"screen-reader-text\">Error Solved: \u201cMicrosoft Outlook Won\u2019t Open or Start\u201d<\/span><\/a><\/p>\n","protected":false},"author":7,"featured_media":10837,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[825],"tags":[],"class_list":["post-5526","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-outlook-pst-file","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to fix &quot;Microsoft Outlook Won&#039;t Open&quot; Error: Causes and Solutions<\/title>\n<meta name=\"description\" content=\"Learn why Microsoft Outlook Won&#039;t Open sometimes and its possible causes. Also, learn about different methods to solve the problem.\" \/>\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\/outlook-wont-open-cannot-start-outlook\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to fix &quot;Microsoft Outlook Won&#039;t Open&quot; Error: Causes and Solutions\" \/>\n<meta property=\"og:description\" content=\"Learn why Microsoft Outlook Won&#039;t Open sometimes and its possible causes. 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