{"id":2555,"date":"2021-12-11T13:31:19","date_gmt":"2021-12-11T13:31:19","guid":{"rendered":"https:\/\/www.emailsupport.us\/blog\/?p=2555"},"modified":"2021-12-17T17:48:24","modified_gmt":"2021-12-17T17:48:24","slug":"fix-microsoft-office-365-wont-open-issue","status":"publish","type":"post","link":"https:\/\/www.emailsupport.us\/blog\/fix-microsoft-office-365-wont-open-issue\/","title":{"rendered":"9 Solutions To Fix Microsoft Office 365 Won\u2019t Open Issue"},"content":{"rendered":"<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Do you also face the error Microsoft office 365 won\u2019t open? This is a common issue Windows 10 users face. But, sometimes, also witnessed by other windows users. Its solutions depend on your experience with the issue and version of Microsoft Outlook you are using.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Let\u2019s start with understanding the issue which Office 365 programs won&#8217;t open.\u00a0<\/span><\/p>\n<p><strong>Also Check: <a target=\"_blank\" href=\"https:\/\/www.emailsupport.us\/blog\/office-365-install-stuck\/\" rel=\"noopener\">Office 365 Install Stuck? Try These 5 Solutions To Install It<\/a><\/strong><\/p>\n<p>&nbsp;<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.emailsupport.us\/blog\/fix-microsoft-office-365-wont-open-issue\/#Conditions_Symptoms_Why_Microsoft_Office_365_Wont_Open\" >Conditions &amp; Symptoms Why Microsoft Office 365 Won\u2019t Open<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.emailsupport.us\/blog\/fix-microsoft-office-365-wont-open-issue\/#List_of_Symptoms_when_Microsoft_Office_365_Wont_Open\" >List of Symptoms when Microsoft Office 365 Won\u2019t Open\u00a0<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.emailsupport.us\/blog\/fix-microsoft-office-365-wont-open-issue\/#How_to_Fix_Microsoft_Office_365_Wont_Open_Issue\" >How to Fix Microsoft Office 365 Won\u2019t Open Issue<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.emailsupport.us\/blog\/fix-microsoft-office-365-wont-open-issue\/#Solution_1_Open_The_Task_Manager\" >Solution 1: Open The Task Manager<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.emailsupport.us\/blog\/fix-microsoft-office-365-wont-open-issue\/#Solution_2_Open_Files_in_MS_Office_Program\" >Solution 2: Open Files in MS Office Program<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.emailsupport.us\/blog\/fix-microsoft-office-365-wont-open-issue\/#Solution_3_Uninstall_Window_Updates\" >Solution 3: Uninstall Window Updates<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.emailsupport.us\/blog\/fix-microsoft-office-365-wont-open-issue\/#Solution_4_Install_Windows_Updates\" >Solution 4: Install Windows Updates<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.emailsupport.us\/blog\/fix-microsoft-office-365-wont-open-issue\/#Solution_5_Disable_Add-In\" >Solution 5: Disable Add-In<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.emailsupport.us\/blog\/fix-microsoft-office-365-wont-open-issue\/#Solution_6_Ensure_MS_Office_is_Activated\" >Solution 6: Ensure MS Office is Activated<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.emailsupport.us\/blog\/fix-microsoft-office-365-wont-open-issue\/#Solution_7_Disable_ClickToRunSvc_Service\" >Solution 7: Disable ClickToRunSvc Service<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.emailsupport.us\/blog\/fix-microsoft-office-365-wont-open-issue\/#Solution_8_Troubleshoot_MS_Office_File_Association\" >Solution 8: Troubleshoot MS Office File Association<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.emailsupport.us\/blog\/fix-microsoft-office-365-wont-open-issue\/#Case_1_Automatic_Troubleshoot\" >Case 1: Automatic Troubleshoot<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.emailsupport.us\/blog\/fix-microsoft-office-365-wont-open-issue\/#Case_2_Manually_Troubleshoot\" >Case 2: Manually Troubleshoot<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.emailsupport.us\/blog\/fix-microsoft-office-365-wont-open-issue\/#Solution_9_Repair_MS_Office\" >Solution 9: Repair MS Office<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.emailsupport.us\/blog\/fix-microsoft-office-365-wont-open-issue\/#Bonus_Tip_Reinstall_Microsoft_Office\" >Bonus Tip: Reinstall Microsoft Office<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.emailsupport.us\/blog\/fix-microsoft-office-365-wont-open-issue\/#Wrapping_Up\" >Wrapping Up<\/a><\/li><\/ul><\/nav><\/div>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Conditions_Symptoms_Why_Microsoft_Office_365_Wont_Open\"><\/span><b>Conditions &amp; Symptoms Why Microsoft Office 365 Won\u2019t Open<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Microsoft users who complain that Office 365 won\u2019t open errors have experienced some specific conditions. There can be other conditions but the typical ones are mentioned here.\u00a0<\/span><\/p>\n<ol style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">MS Office doesn\u2019t open\/launch after the update.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Office doesn&#8217;t open the correct program you want to open.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>MS office doesn&#8217;t open with a file association<\/b><span style=\"font-weight: 400;\"> &#8211; install a program associated with the file or if already installed, create an association in the control panel default programs.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>MS Office has <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/answers.microsoft.com\/en-us\/msoffice\/forum\/all\/all-of-my-ms-office-applications-stopped-working\/5e278f13-6576-48f6-af87-c74d0d385a6a\">stopped working<\/a> error popup<\/b><span style=\"font-weight: 400;\"> &#8211; in this case, you can check for an online solution or just close the program.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Corrupted profile\u00a0<\/span><\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"List_of_Symptoms_when_Microsoft_Office_365_Wont_Open\"><\/span><b>List of Symptoms when Microsoft Office 365 Won\u2019t Open\u00a0<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ol style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">When you double-click on an MS Office program, it doesn&#8217;t open.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The program stocks while processing to open.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">MS Office programs like Word, Excel and other programs open but display a blank screen.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Inactivity at the time of opening the program.\u00a0<\/span><\/li>\n<\/ol>\n<p><strong>Also Check: <a target=\"_blank\" href=\"https:\/\/www.emailsupport.us\/blog\/office-365-couldnt-verify-subscription\/\" rel=\"noopener\">Office 365 Couldn&#8217;t Verify Subscription? Here&#8217;s How To Verify It!<\/a><\/strong><span style=\"font-weight: 400;\"><\/span><\/p>\n<p>&nbsp;<\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"How_to_Fix_Microsoft_Office_365_Wont_Open_Issue\"><\/span><b>How to Fix Microsoft Office 365 Won\u2019t Open Issue<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">If your MS office shows the above-mentioned symptoms, it will be easy to fix them. But, if you can&#8217;t identify the cause or symptom, you can still apply the solutions mentioned here.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Solution_1_Open_The_Task_Manager\"><\/span><b>Solution 1: Open The Task Manager<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Press ctrl + shift + Esc or right-click on the taskbar to open.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Go to the Details tab.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Find WINWORD.EXE\u00a0<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><b>Note: If it appears that means windows already decided that the program is open.<\/b><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Right-click on the file, select edit or open and see if it opens the file for you.\u00a0<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Solution_2_Open_Files_in_MS_Office_Program\"><\/span><b>Solution 2: Open Files in MS Office Program<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">If you can\u2019t open the MS program directly by double-tapping on, try to open the corresponding office program. After that, open the target file from the app.\u00a0<\/span><\/p>\n<ol style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Launch Microsoft office, excel or power-point, whichever opens directly.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Go to the top menu bar.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Select File &gt;&gt; Open.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Find your target file and select it to open.\u00a0<\/span><\/li>\n<\/ol>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">If the target file opened successfully, the error office 365 not opening is resolved.\u00a0\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Solution_3_Uninstall_Window_Updates\"><\/span><b>Solution 3: Uninstall Window Updates<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Sometimes, inappropriate or unnecessary updates cause the error Office 365 programs won&#8217;t open.\u00a0<\/span><\/p>\n<ol style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Go to window settings.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Select Update &amp; Security &gt;&gt; Window Updates.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Now select View Update History.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Look around and click on the option Uninstall Updates &gt;&gt; right-click on recent updates &gt;&gt; Uninstall.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Follow the on-screen instruction to finish the process of uninstalling updates.\u00a0<\/span><\/li>\n<\/ol>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Solution_4_Install_Windows_Updates\"><\/span><b>Solution 4: Install Windows Updates<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Using an outdated windows version can cause the error. Update the windows and see if it helps in fixing the error.\u00a0<\/span><\/p>\n<ol style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Go to settings.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Select update and security.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Click on check for updates and wait for the result.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">If there are available latest updates, update your system.\u00a0<\/span><\/li>\n<\/ol>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Solution_5_Disable_Add-In\"><\/span><b>Solution 5: Disable Add-In<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Is there any damaged add-in? If you don&#8217;t know, check by disabling them.\u00a0<\/span><\/p>\n<ol style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Launch the MS word program.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Head to File and select Options.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Click on Add-ins.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">At its bottom, select COM Add-ins from the drop-down list and select GO.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">COM Add-ins dialog box will open, uncheck all add-ins and click Ok to confirm.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Reopen the word program.<\/span><\/li>\n<\/ol>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Tip: If it works, check each add-in one by one, by unchecking at a time, so you can find the culprit add-in.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Solution_6_Ensure_MS_Office_is_Activated\"><\/span><b>Solution 6: Ensure MS Office is Activated<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">You need to check if the MS office setup you have installed is genuine or activated. Because if it is not, you may open the program but find nothing to create content or existing files.\u00a0<\/span><\/p>\n<ol style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Head to Files, then select Account.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Go to the Details and check Product Information.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Enter the product key and activate the MS office.\u00a0<\/span><\/li>\n<\/ol>\n<p><strong>Read Also: <a target=\"_blank\" href=\"https:\/\/www.emailsupport.us\/blog\/office-365-not-activating\/\" rel=\"noopener\">Office 365 Not Activating | How To Activate? [Solved]<\/a><\/strong><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Solution_7_Disable_ClickToRunSvc_Service\"><\/span><b>Solution 7: Disable ClickToRunSvc Service<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Run service may restrict the office to open normally. To find out, you need to restrict or stop the ClickToRunSvc from the task manager.\u00a0<\/span><\/p>\n<ol style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Open Task Manager.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Select the tab Services.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Look and right-click on the ClickToRunSvc service and click Stop.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Open any of the office files to see the result.<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<\/ol>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Solution_8_Troubleshoot_MS_Office_File_Association\"><\/span><b>Solution 8: Troubleshoot MS Office File Association<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&nbsp;<\/p>\n<h4 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Case_1_Automatic_Troubleshoot\"><\/span><b>Case 1: Automatic Troubleshoot<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ol style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Download the program and double-click on the downloaded file to open.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">In the pop-up window, tap next and follow the on-screen instructions to deal with MS office file association.\u00a0<\/span><\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<h4 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Case_2_Manually_Troubleshoot\"><\/span><b>Case 2: Manually Troubleshoot<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">If automatic file association doesn&#8217;t help, you can troubleshoot it manually.<\/span><\/p>\n<ol style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Go to the Start button of your windows &gt;&gt; select Settings.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Select Apps &gt;&gt; from the left menu select Default apps.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Scroll down to find and select \u2018Set defaults by apps.\u2019<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Select the problematic app Microsoft Office 365 Won\u2019t Open.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Select Manage.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Identify the file extension that doesn&#8217;t open and set its default app as the Office program.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Tap on the current matched app and select the target MS office app.<\/span><\/li>\n<\/ol>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">For multiple problematic apps, you need to repeat the process.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Solution_9_Repair_MS_Office\"><\/span><b>Solution 9: Repair MS Office<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">If nothing works out, <strong><a target=\"_blank\" href=\"https:\/\/www.emailsupport.us\/blog\/how-to-repair-office-365\/\" rel=\"noopener\">repair the Microsoft office<\/a><\/strong> so you can be relieved from the problem Office 365 Won\u2019t Open.<\/span><\/p>\n<ol style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Launch control panel.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Then, select Programs &gt;&gt; Uninstall Programs.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Choose (right-click) Microsoft Office from the program list and select Change.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A popup window will appear. Select any of the options: Quick repair or Online repair.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Select Repair to start the process.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Restart your system after the repair process is finished.\u00a0<\/span><\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Bonus_Tip_Reinstall_Microsoft_Office\"><\/span><b>Bonus Tip: Reinstall Microsoft Office<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Several Microsoft application errors and issues get resolved just by reinstalling it. To re-install the application, you need to visit the official Office website.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Wrapping_Up\"><\/span><b>Wrapping Up<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">We hope the issue Microsoft Office 365 Won\u2019t Open is fixed with any of the solutions mentioned above. But, if you still face the error you should take <strong><a target=\"_blank\" href=\"https:\/\/www.emailsupport.us\/microsoft-office-365-support\" rel=\"noopener\">Office 365 expert help<\/a><\/strong> or you can connect with us. We have a team of technicians who have experience and expertise in fixing MS office errors.\u00a0<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Do you also face the error Microsoft office 365 won\u2019t open? This is a common issue Windows 10 users face. But, sometimes, also witnessed by other windows users. Its solutions depend on your experience with the issue and version of Microsoft Outlook you are using. Let\u2019s start with understanding the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2603,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[603],"tags":[849,854,853,852,851,850],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.10 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Microsoft Office 365 Won\u2019t Open? Let&#039;s Fix It<\/title>\n<meta name=\"description\" content=\"How to fix Microsoft Office 365 Won\u2019t Open ? Get expert solutions explained in this guide. 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