Update 'I cant start Microsoft Outlook or receive the error Cannot start Microsoft Outlook Cannot open the Outlook Window'

I-cant-start-Microsoft-Outlook-or-receive-the-error-Cannot-start-Microsoft-Outlook--Cannot-open-the-Outlook-Window.md

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+To install [Fix Outlook troubleshooting hub](https://office365emailfix.blogspot.com/2025/10/fix-outlook-not-sending-or-receiving.html) the latest Windows and Office updates, click the link below. You can determine if it's corrupted by creating a new profile and changing which profile is used when Outlook starts. Use the classic Outlook startup troubleshooter to diagnose and fix several common classic Outlook for Windows issues for you. If you are having trouble locating scanpst.exe you can also use OutlookTools (free!). For a step-by-step guide on how to work with scanpst.exe see Using the Inbox Repair Tool (scanpst.exe). Virus scanners which integrate themselves with Outlook are known to cause a lot of issues.
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+If you can't open Outlook, or Outlook disappears or crashes, one of your add-ins may be to blame or you may need to update Outlook. If the troubleshooter can't fix your issue, or if you'd like to fix it yourself, see the next section.
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+To learn more about how to share your feedback, see How do I give feedback on Microsoft Office. Visit Firefox support to learn how to Disable or remove Add-ons. If you access your Outlook.com account through the iOS Mail app, you may be repeatedly asked to enter your username and password. We're aware of an issue where some users see the error message "Your message can't be displayed right now".
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+Give Outlook a few minutes to finish the process and it should start to Fix Outlook troubleshooting hub work again. If Outlook isn't stuck at a screen that says "Processing," or this didn't resolve your issue, continue to the steps below. If those steps don't work, see Need additional help?
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+Should you decide to remove a profile, back up the data files first. All offline cached content will be deleted when you choose Remove. For more information, see Introduction to Fix Outlook troubleshooting hub Outlook Data Files (.pst and .ost). A corrupted profile, a damaged PST file, faulty add-ins, or improper Outlook startup settings often cause this issue.
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+To keep up with new viruses as they're created, antivirus software vendors periodically provide updates that you can download from the Internet. Download the latest updates by visiting your antivirus software vendor's website. We recommend setting Windows Update to automatically download and install recommended updates. Bug fixes, new features, and performance enhancements are released regularly. Not something you want to take on lightly, but sometimes you have to.
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+If creating a new profile solves your issue, you can return to the Show Profiles dialog and delete your old profile. If you try to delete or move a large number of messages at once, Outlook can appear to freeze, but really, it's working behind the scenes. If Outlook is performing some operation on hundreds or thousands of messages at once, it might appear to be stuck. Give Outlook a few minutes to finish the process and it should start to work again. If Outlook isn't stuck at a screen that says "Processing," or this didn't resolve your issue, continue to the steps below. Use the classic Outlook startup troubleshooter to diagnose and fix several common classic Outlook for Windows issues for you.
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+It empowers you to identify recoverable data and restore it to a usable state within Outlook, giving you a much better chance of retrieving your critical information. When the search is over, select one of the files from the list in the central part of the search panel and click the OK button. The path to selected file will be displayed in the address field of Recovery Toolbox for Outlook. If you want to sign in and encounter the situation that your email doesn’t exist, it means your account was deleted before 60 days (about 2 months) or more. In such a case, you can contact the Microsoft support agent to recover deleted accounts. Before talking to a Microsoft agent, be prepared for account-related queries and credentials.
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+Recovery Toolbox worked very well and relatively quickly. The original .ost file must be converted to a pst file using Recovery Toolbox for Outlook and then opened in Outlook. Conversion from OST to PST using Recovery Toolbox for Outlook doesn't require the availability of Exchange Server or Windows Domain Controller. The full version of Recovery Toolbox for Outlook transforms it from a data loss diagnostic tool into a complete data recovery solution.
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+It enables you to verify its performance and functionality and ensures your critical data can be recovered without hassle. Before making changes, make sure to save your Outlook stuff to Fix Outlook troubleshooting hub keep it safe. If Outlook still doesn’t open after trying these fixes, you might need more help. Asking IT experts or Microsoft’s support team could give you the best solution for the Outlook problem you’re facing. You can start Outlook in safe mode, disable your add-ins, and then try to open Outlook normally.
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+The good news is that most "Outlook won’t open" errors can be resolved with a few proven troubleshooting steps. If the above Fix Outlook troubleshooting hub steps, especially ScanPST.exe, fail to resolve the "Outlook won’t open" error, your Outlook data file is likely severely corrupted or extensively damaged. In such critical situations, a specialized and reliable professional tool like the Aryson Outlook PST Repair Tool becomes the best solution. Yes, you can often fix Outlook without reinstalling Office.