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.

Specifically around FSLogix (which we use) and a known issue. We’re going to add the registry setting to roam the paths listed in the known issue and re-register appx and see how we go. There are also notes about legacy per-user auth being an issue, however we had two accounts left in per-user auth but none with the issue. If you think that it is patch related, roll back the patch and see if that fixes it for the end users.

Third-party add-ins are helpful… until they’re not. Outdated or conflicting ones can mess with Outlook’s core performance, causing unexpected slowdowns or outright failure to launch. Create your account and connect with a world of communities.

However, some might be incompatible with your Outlook version and thus, cause conflicts leading to crashes. Therefore, you can try disabling unnecessary add-ins to stabilize Outlook and its workflow. For that, we first need to find out which is the faulty add-in by running Outlook in Safe mode.

Some programs running on the back of your computer may conflict with Outlook and cause Outlook to crash. To see if that’s the problem for you, restart your computer, and then reopen Outlook to see if it runs correctly. Test if Outlook is functioning correctly after disabling step-by-step Outlook troubleshooting the add-ins. If not, it means still Outlook keeps crashing. Let us try another solution to get this issue fixed soon. If Outlook does not crash, this indicates that one or more Add-ins are to blame for the Outlook 365 crash.

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 step-by-step Outlook troubleshooting 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.

Starting Outlook in safe mode, which starts Outlook without add-ins loaded, can tell you if an add-in is the source of the problem. Turn off all the add-ins, close Outlook, and reopen it (not in Safe Mode). If it opens correctly, you can enable the add-ins one by one. After turning on each one, close and reopen Outlook to see if it loads correctly. It will help pinpoint the troublesome add-in you can remove or replace.

Most of these crashes come down to one thing – problematic data files. PSTs and OSTs act like Outlook’s memory banks. When they get too large, go corrupt, or are poorly configured, step-by-step Outlook troubleshooting things start to break. This should resolve the issue of ‘Outlook keeps crashing’.

I finished the migration for legacy MFA since 1 months but I still have the problem. If none of that worked, I’d restore the server from backup when it was working and see what happens moving forward. If both of those don’t fix it, I’d run a full maintence cycle on the server.

Wondering how to fix the Outlook Crashes During Startup error? Don’t worry, in this article we have explained 6 useful methods which will help you to fix this issue. Also, find out how you can repair your corrupted 0utlook data file using effective software like Remo Repair Outlook. If none of the above solutions help you resolve the Outlook crashing error, it means that your Outlook data file has been corrupted. This is caused when the program tries to access the storage file but fails to do so. However, frequent Outlook crashes also result in corruption making your Outlook inaccessible.

We have gone through many steps with Microsoft Support until they could help no further. We have tried to trouble shoot and done a system restore but there was no restore point step-by-step Outlook troubleshooting and a startup repair and nothing worked. When we performed a startup repair this is the message we received. Outlook stores all your email messages, meetings and events, contacts, and tasks in data files.

If your Outlook crashes when opening step-by-step Outlook troubleshooting or on startup or even if Outlook stucks at Processing, you can fix it by opening Outlook in Safe Mode. To open Outlook in Safe Mode, follow the instructions below. You can determine if it's corrupted by creating a new profile and changing which profile is used when Outlook starts. If Outlook is NOT able to start in safe mode, then try the next proposed solution below, entitled Create a new Outlook profile. Then, each item in your calendar folder is checked for known problems that can cause unexpected behavior, such as meetings that seem to be missing.