Follow the six quick procedures given below to effectively resolve Outlook crashing while starting up. Find solutions to common problems or get help from a support agent. Use the classic Outlook startup troubleshooter to diagnose and fix several common classic Outlook for Windows issues for you. The next screen is the preview of all the recovered Outlook items and this concludes the repair process of a PST file using Remo Repair Outlook [PST]. However, if this doesn’t help, proceed to the next step. If a Microsoft 365 application such as Word or Excel isn't working correctly, sometimes restarting it will fix the problem.

Repair an Outlook data file (.pst) fileExit Outlook and browse to one of the following file locations: ...Open SCANPST.EXE.Select Browse to select the Outlook Data File (.pst) you want to scan. ...Choose Start to begin the scan.If the scan finds errors, choose Repair to start the process to fix them.More items...

Users who had been working normally suddenly get Outlook running again received the CAA2000B error / AADSTS (after the token expired). Most Outlook problems can be resolved with proper troubleshooting and maintenance. Following the fixes above will help you keep your Outlook running smoothly and protect your productivity. We hope this guide proves useful in resolving your Outlook problems efficiently. Outlook accounts can have up to 100GB of storage per mailbox.

After the update, reopen Outlook to see if it can work correctly. The free manual solutions to fix Microsoft Outlook keeps shutting down ends here. Now, let us move into the solutions to fix the issue of MS Outlook.

After finishing one step, if it does not resolve the issue move on to the next. Clear unnecessary files from outbox and trash folder to optimize the performance of your Outlook application. Also, try to use the necessary Outlook features to enhance the performance of Outlook as well as Windows. A disturbed internet connection can lead to errors like 0x800CCC0F, 0x a and 0x a. Avoid using unstable or low get Outlook running again internet connection and use a reliable and high-speed internet connection with reasonable download/upload speed.

To learn more about how to share your feedback, see How do I give feedback on Microsoft Office. Customers using the contact support buttons at the foot of the support pages, or the "email us" links in support Virtual Agent, are unable to open the Help Pane. If you access your Outlook.com account through the iOS Mail app, you may be repeatedly asked to enter your username get Outlook running again and password.

Repeat the process for all the add-ins that were selected earlier and wait until the Outlook crashing problem repeats. 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 Outlook Data Files (.pst and .ost). The steps to access the repair tool vary depending on your operating system.

One thing that filters are good at is to enable unified inbox ability in outlook that is unfortunately not built in by default. Every antivirus software is different, so you'll want to look up how to specifically enable Outlook with the software you're using. Check your settings to see if you've got the "always prompt for password" feature enabled. You should be able to go to Outlook via a web browser and reset your password. This is one of the more popular get Outlook running again culprits as to why Outlook repeatedly asks for your password. It might be that antivirus software is trying to block a function that is repeatedly trying to squeeze through the firewall.

Often there is the option to add sites to a whitelist, and you can give more permissions to Outlook. The easiest way to find out if this is the problem is to temporarily disable your antivirus software and log in to Outlook as usual. If the prompts go away, you'll know it was the antivirus software. There are a number of reasons this issue arises, which makes it even more infuriating. It could be an issue with a setting on the account, or it could be something external that is blocking normal functions in Outlook.

Add an Outlook.com alias to your account and send email to Gmail users using that alias. For more information, go to Add or remove an email alias in Outlook.com. If you can't choose any of the menu options, type inside an email message, calendar event, or contact, Outlook may have frozen.

To learn more about how to send us feedback, please see How do I give feedback on Microsoft Office. To access the filtering options faster, add them to your Quick Access Toolbar. Another options is to use the Filter Email button on the ribbon.

After October 14, 2025, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Windows 10. Your PC will still work, get Outlook running again but we recommend moving to Windows 11.

If Outlook is configured to connect to the Exchange mailbox in Online mode, an .ost file is not used. To adjust the number of days of data that are synced for shared folders, add the following registry values. You can limit the synchronization window that’s used for calendar folders to reduce the number of items that are stored locally in your calendar folders.