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2188troubleshooting-outlook-startup-issues
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  • Lin Berryhill
  • 2188troubleshooting-outlook-startup-issues
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Opened Jan 03, 2026 by Lin Berryhill@linberryhill07
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Outlook doesnt start, crashes or shows Not Responding

The navigation pane is the leftmost pane in Outlook where you'll methods to stop Outlook crashing find your folder list and the icons to move between Mail, Calendar, People, and Tasks. Running the /resetnavpane command removes all customizations to the navigation pane. If Outlook is NOT able to start in safe mode, then try the next proposed solution below, entitled Create a new Outlook profile.

If Outlook does not crash, this indicates that one or more Add-ins are to blame for the Outlook 365 crash. If this does not resolve the Outlook 365 crash issue, proceed to the next solution. Here is the next solution for your Microsoft Outlook keeps crashing on Windows. This step will show you how disabling the add-ins can help. The PST files will be repaired and the error will be resolved.

Until you can install the Windows Update fix release, you can set a registry key that will cause Outlook to stop using the local Windows Search service. When this registry key is set, Outlook will use its own built-in search engine. The built-in search will display the message below to indicate it is not using the Windows Search service. The issues documented in this section have been reported after installing the recent updates listed below. We're investigating the issues and will update this page when a fix is available.

To effortlessly change your settings so that your inbox looks the way you want it to, see Personalize your new Mail experience in Outlook.com. To access the calendar shared with your Microsoft 365 for business account, you'll need to accept the invitation from Outlook on the web, iOS, or Android. If you've already clicked the Accept button in Outlook 2016, you won't be able to re-accept the invitation from another Outlook application. The person who sent you the invitation will need to remove your permissions and then send a new invitation. You can also add the secondary connected accounts (Gmail, Yahoo, etc.) in Outlook.com as additional accounts in the Outlook profile.

Use the classic Outlook for Windows connectivity troubleshooter to troubleshoot Outlook connectivity issues. If your mailbox is full, we won't be able to reply to your request. Check that you have not methods to stop Outlook crashing accidentally blocked the Gmail domain when blocking one Gmail user. We will update this article as soon as we have more information on a fix.

In System Configuration, if you select a check box, the related service or startup program runs when you restart the computer. If the check box is cleared, the service or startup program doesn't run when you restart the computer. When you start Windows normally, several applications and services start automatically and then run methods to stop Outlook crashing in the background. A Selective Startup or "clean boot" process can help you identify problems that are caused by application conflicts. To keep up with new viruses as they're created, antivirus software vendors periodically provide updates that you can download from the Internet.

Sometimes, antivirus real-time scanning can slow Outlook down. Configure your antivirus software to exclude Outlook files or processes from real-time scans to avoid interference. If you can't choose any of the menu options, type inside an email message, calendar event, or contact, Outlook may have frozen. There are three steps you can take to try to get Outlook working again. You might need to set Windows Update to automatically download and install recommended updates. Installing any important, recommended, and optional updates can often correct problems by replacing out-of-date files and fixing vulnerabilities.

We have multiple tools to help you automatically diagnose an issue, troubleshoot, and fix problems with Outlook. TrustedTech is dedicated to being a reliable resource for all software and technology support needs. Our relationship to the Microsoft Partner Network allows us to provide competitive pricing and authentic software and support, all with a much-needed human element. Use the MIcrosoft 365 inventory scan troubleshooter to generate either a normal or full scan report of your computer and installed Microsoft 365 applications. Use the Microsoft 365 sign-in troubleshooter to help resolve sign-in issues encountered with Microsoft 365.

You may notice that All, Unread , Mentioned and other sort and filtering options, such as By date, and Newest are missing in Outlook above your email list. Please install the Windows 10 Fall Creators Update to fix this issue. Outlook 2016 freezes when you try to preview an Excel file that's attached to an email. After updating Office, you may experience a brief flashing window every hour, which triggers the OfficeBackgroundHandlerRegistration task to start methods to stop Outlook crashing running. For more information about when builds are available for their respective channels, go to Update history for Microsoft 365.

For a list of antivirus software vendors, see Consumer antivirus software methods to stop Outlook crashing providers for Windows. If the problem doesn't occur after you restart Outlook, one of the add-ins is likely the cause of the problem. Restore the add-ins one at a time until the problem does occur to determine which add-in is causing the problem. Although add-ins can enhance your user experience, they can occasionally interfere or conflict with Outlook. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.

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Reference: linberryhill07/2188troubleshooting-outlook-startup-issues#15