{"id":881,"date":"2020-03-26T11:16:38","date_gmt":"2020-03-26T11:16:38","guid":{"rendered":"https:\/\/www.mailconvertertools.com\/blog\/?p=881"},"modified":"2025-11-12T13:07:35","modified_gmt":"2025-11-12T13:07:35","slug":"cannot-start-microsoft-outlook","status":"publish","type":"post","link":"https:\/\/www.mailconvertertools.com\/blog\/cannot-start-microsoft-outlook\/","title":{"rendered":"Resolve \u201cCannot Start Microsoft Outlook. Cannot Open The Outlook Window\u201d Error"},"content":{"rendered":"\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-top\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;881&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;top&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;0&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;0&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;Rate this post&quot;,&quot;legend&quot;:&quot;0\\\/5 - (0 votes)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;Resolve \u201cCannot Start Microsoft Outlook. Cannot Open The Outlook Window\u201d Error&quot;,&quot;width&quot;:&quot;0&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 0px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            <span class=\"kksr-muted\">Rate this post<\/span>\n    <\/div>\n    <\/div>\n<div class=\"p-4 mb-4\" style=\"border: 2px solid #005EFF; border-radius: 30px;\">\n<p><strong>Summary:<\/strong> Are you tired of receiving the cannot start Microsoft Outlook cannot open the Outlook window error? It gets frustrating over time to receive this same message again and again. When you urgently need to access your Outlook, all you receive is a \u201cCannot Start Microsoft Office Outlook\u201d pop-up. This seems like a never-ending problem. However, there is a solution. This blog provides different manual methods and a <strong>MailConverterTools<\/strong> <a href=\"https:\/\/www.mailconvertertools.com\/pst-email-recovery\/\" target=\"_blank\" rel=\"noopener\"><strong>PST Recovery Tool<\/strong><\/a> to fix your issues seamlessly and quickly.<\/p>\n<p class=\"my-2 text-center\"><a class=\"custom-download-btn\" href=\"https:\/\/www.sysinfotools.com\/demo-version\/SysInfoTools-PST-recovery.exe\"><i class=\"icon-windows\"><\/i> Download Now<\/a>\u00a0\u00a0<a class=\"custom-buy-btn\" href=\"https:\/\/www.sysinfotools.com\/buynow\/pst-recovery.php\" target=\"_blank\" rel=\"noopener noreferrer\"><i class=\"icon-basket\"><\/i> Buy Now<\/a><\/p>\n<\/div>\n<h2>Reasons for Outlook Error<\/h2>\n<p>Generally, when opening MS Outlook users get the <strong>\u201c<\/strong>cannot start Microsoft Outlook the set of folders cannot be opened\u201d error. It may be due to many substantial reasons as follows:<\/p>\n<ul>\n<li>The Outlook OST or PST files may be overloaded, corrupted, or damaged.<\/li>\n<li>It can be because the navigation pane is damaged or affected.<\/li>\n<li>The user may have wrongly installed or re-installed MS Outlook.<\/li>\n<li>Also, conflict with Outlook after installing a new program is a cause.<\/li>\n<li>Moreover, viruses, threats, and malware attacks are quite common issues.<\/li>\n<\/ul>\n<h2>Methods to Resolve Outlook Will Not Start Error<\/h2>\n<p>The <a href=\"https:\/\/www.mailconvertertools.com\/blog\/how-to-fix-outlook-error-code-0x800ccc0e\/\" target=\"_blank\" rel=\"noopener\"><strong>Outlook error code 0x800ccc0e<\/strong><\/a> is irresistible. We have already discussed its causes. Let\u2019s move further to understand the methods for resolving it. There are two ways:<\/p>\n<ul>\n<li>You can manually fix the cannot start Microsoft Outlook cannot open the Outlook window error.<\/li>\n<li>Protect your files using a professional tool.<\/li>\n<\/ul>\n<p>Both methods have their benefits and procedures. The detailed guide for these methods is discussed below.<\/p>\n<p>But before that, ensure to perform these basic tasks to fix this error:<\/p>\n<ul>\n<li>Reset the <strong>Navigation Pane<\/strong> of Outlook 365 by executing the <strong>Outlook.exe \/resetnavpane<\/strong> cmdlet in the Run dialog box.<\/li>\n<li>Press the <strong>Ctrl Key<\/strong> and launch Outlook simultaneously to start <strong>Microsoft Outlook in Safe Mode.<\/strong><\/li>\n<li>Reduce the Outlook data <strong>file size<\/strong> by compressing data files, archiving old emails, and deleting unwanted emails.<\/li>\n<li>Moreover, create a <strong>new Outlook Profile<\/strong> if the previous one is too old or corrupted.<\/li>\n<li>Also, remove the <strong>XML files<\/strong> and update Outlook to the current version.<\/li>\n<\/ul>\n<p>If this still does not help in resolving Outlook Error, then try the below-given methods.<\/p>\n<h3>Method 1: Disable and Enable Add-Ins<\/h3>\n<p>To do so, follow these steps:<\/p>\n<ol>\n<li>Open <strong>Outlook <\/strong>on your system. Go to <strong>File &gt; <\/strong>click<strong> Options &gt; <\/strong>choose<strong> Add-Ins<\/strong>.<\/li>\n<li>Now, scroll till the end to find the <strong>Manage<\/strong> column located at the bottom.<\/li>\n<li>Next, select <strong>COM Add-ins<\/strong> and hit the <strong>Go<\/strong> button.<\/li>\n<li>Further, uncheck all add-ins available in the list, click <strong>OK<\/strong>, and restart Outlook normally.<br \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.mailconvertertools.com\/blog\/wp-content\/uploads\/2024\/08\/1-5.webp\" alt=\"uncheck all add-ins\" width=\"350\" height=\"200\" \/><\/li>\n<li>Afterward, enable each add-in one at a time and restart Outlook again to test if this worked or not.<\/li>\n<\/ol>\n<h3>Method 2: Resolve Cannot Start Microsoft Outlook Error with Inbox Repair Tool<\/h3>\n<p>Follow the steps given below to use this In-built Windows Utility to fix the Outlook Error due to corrupted PST files.<\/p>\n<ol>\n<li>Open <strong>This PC<\/strong> on your system.<\/li>\n<li>Next, follow through the path <strong>C:\\Program Files\\Microsoft Office\\root\\Office version.<\/strong><\/li>\n<li>Now, search and find the <strong>SCANPST.exe<\/strong> tool and run it.<\/li>\n<li>Furthermore, click the <strong>Browse<\/strong> button to select your <strong>PST<\/strong> file. In addition, click the <strong>Start<\/strong> button to initiate the process.<br \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.mailconvertertools.com\/blog\/wp-content\/uploads\/2024\/08\/2-5.webp\" alt=\"select PST files and click on start\" width=\"350\" height=\"200\" \/><\/li>\n<li>At last, click the <strong>Repair<\/strong> button to fix the issues.<\/li>\n<\/ol>\n<h3>Method 3: Checking Compatibility Mode<\/h3>\n<p>Running MS Outlook in compatibility mode can also create cannot start Microsoft Outlook cannot open the Outlook window errors. To manage it, follow these steps to turn it off:<\/p>\n<ol>\n<li>Right-click the <strong>Outlook.exe<\/strong> and select <strong>Properties<\/strong>.<\/li>\n<li>In the dialog box, navigate to the <strong>Compatibility<\/strong> tab and uncheck the box <strong>Run this program in compatibility mode<\/strong>.<\/li>\n<li>Further, click the <strong>Apply<\/strong> button and then hit <strong>OK<\/strong> to exit.<\/li>\n<\/ol>\n<p>Open Outlook again, to check if the error is resolved. Otherwise, move to the next method.<\/p>\n<h3>Method 4: Generating a New Outlook Profile<\/h3>\n<p>To create a new profile, when the initial account in Outlook gets corrupted, follow these steps:<\/p>\n<ol>\n<li>Open the <strong>Control Panel <\/strong>in your system.<\/li>\n<li>Navigate to <strong>User Accounts<\/strong> and select <strong>Mail (Microsoft Outlook)<\/strong>.<\/li>\n<li>Next, in the dialog box open, click <strong>Show Profiles<\/strong> and then click the <strong>Add<\/strong> button to create a new profile.<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.mailconvertertools.com\/blog\/wp-content\/uploads\/2024\/08\/3-4.webp\" alt=\"click on show profiles\" width=\"350\" height=\"150\" \/><\/li>\n<li>Further, the <strong>Profile Name<\/strong> dialog box will open, input the name and click <strong>OK<\/strong>.<\/li>\n<li>Afterward, the <strong>Auto Account Setup<\/strong> dialog box opens. Enter the required details like email and password and click <strong>Next<\/strong>.<br \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.mailconvertertools.com\/blog\/wp-content\/uploads\/2024\/08\/4-5.webp\" alt=\"enter email and password\" width=\"350\" height=\"200\" \/><\/li>\n<li>Then, click <strong>Finish<\/strong> to complete creating a new profile.<\/li>\n<li>You can view the new profile created in the <strong>General<\/strong> Tab in the <strong>Mail<\/strong> dialog box. Subsequently, when you start Outlook, use the new profile created by clicking on <strong>Prompt for a Profile to be used &gt; OK<\/strong>.<\/li>\n<\/ol>\n<p>Here, the manual methods are completed. The above-mentioned methods are cost-free, but they possess some limitations.<\/p>\n<h4>Shortcomings of Manual Method:<\/h4>\n<ul>\n<li>These methods are not compatible with every system configuration or Outlook version.<\/li>\n<li>Manual methods are tiring, complex, and require technical assistance.<\/li>\n<li>Also, these methods are time-consuming and a minor mistake can cause data loss.<\/li>\n<li>Moreover, not every user may have the required resources or tools to fix errors.<\/li>\n<\/ul>\n<h3>Automated Tool to Fix- Cannot Start Microsoft Outlook Cannot Open the Outlook Window<\/h3>\n<p>The <strong>PST Recovery Tool<\/strong> is a quick fix for all your Outlook issues. When the manual methods seem hard, this tool easily handles all the files, repairs, and recovers data without losses. It finishes the task within seconds while maintaining the data integrity. Moreover, it has other unique features too, such as:<\/p>\n<ul>\n<li>It has no limitations on file size and supports bulk recovery.<\/li>\n<li>This tool recovers corrupted PST emails, contacts, calendars, and more.<\/li>\n<li>It is compatible with different systems and Outlook versions.<\/li>\n<li>Additionally, this tool ensures that the folder hierarchy is maintained.<\/li>\n<\/ul>\n<h4>Process For Using The Tool<\/h4>\n<ol>\n<li>Download and install the tool on your system. Run it as an administrator.<\/li>\n<li>Next, click <strong>Open<\/strong>, browse and select the required <strong>PST<\/strong> file, and click <strong>Open<\/strong>.<\/li>\n<li>Further, choose the <strong>recovery mode<\/strong> and click the <strong>OK<\/strong> button to continue.<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.mailconvertertools.com\/blog\/wp-content\/uploads\/2024\/08\/5-4.webp\" alt=\"choose the recovery mode\" width=\"437\" height=\"300\" \/><\/li>\n<li>Now, the tree structure appears. Expand it and preview the files and folders.<\/li>\n<li>In addition, select the mailbox folders and hit the <strong>Save<\/strong> button from the taskbar.<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.mailconvertertools.com\/blog\/wp-content\/uploads\/2024\/08\/6-3.webp\" alt=\"hit the save button\" width=\"437\" height=\"300\" \/><\/li>\n<li>Subsequently, choose the location to save the resultant file and click <strong>OK<\/strong>.<\/li>\n<li>Select the required <strong>file-saving format<\/strong>, apply other optional filters, and click <strong>OK<\/strong>.<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.mailconvertertools.com\/blog\/wp-content\/uploads\/2024\/08\/7-2.webp\" alt=\"select the required file format\" width=\"437\" height=\"300\" \/><\/li>\n<li>Click <strong>OK<\/strong> to complete once the saving process is done.<\/li>\n<\/ol>\n<p><strong>Also Read:<\/strong> Quick Methods to Fix &#8220;<strong><a href=\"https:\/\/www.mailconvertertools.com\/blog\/cannot-send-emails-from-outlook\/\" target=\"_blank\" rel=\"noopener\">Cannot Send Emails From Outlook<\/a><\/strong>&#8221; Error<\/p>\n<h3>Conclusion<\/h3>\n<p>To sum up, the failure of Outlook to launch is a huge issue, stopping our daily tasks. However, there are different manual methods discussed to resolve Microsoft Outlook cannot open the Outlook window error. But, they aren\u2019t flexible. Therefore, an expert tool is suggested for more convenience. It ensures the safe recovery of files and seamlessly manages your Outlook data worry-free.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Summary: Are you tired of receiving the cannot start Microsoft Outlook cannot open the Outlook window error? It gets frustrating<a class=\"read-more ml-1 main-read-more\" href=\"https:\/\/www.mailconvertertools.com\/blog\/cannot-start-microsoft-outlook\/\">Read More<\/a><\/p>\n","protected":false},"author":8,"featured_media":6738,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[300],"tags":[108,107],"class_list":["post-881","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-recovery-tools","tag-cannot-open-outlook","tag-cannot-start-microsoft-outlook"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Resolve \u201cCannot Start Microsoft Outlook. Cannot Open The Outlook Window\u201d Error<\/title>\n<meta name=\"description\" content=\"Learn the 4 best manual ways &amp; an automated way to resolve \u201cCannot Start Microsoft Outlook. 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