1 Outlook crashes or stops responding when used with Office 365
Mireya Hutcheon edited this page 2026-02-01 10:24:06 +08:00
This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

Occasionally, classic Outlook tries to run a process in the background. Auto-archive, sending and receiving a very large attachment, or running some of the other mailbox tools can all be done in the background. Check the status bar at the bottom of the screen to see if another process is running. If so, wait a short time (usually two or three minutes) to see if Outlook starts working again. 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.

Especially if youre using a different version of Windows, this can break compatibility with Microsoft Outlook or Outlook configuration files. If Outlook still misbehaves, your antivirus might be the Outlook not opening on Windows 10 culprit. Make sure Outlook is on your antiviruss trusted list, and if its still acting up, temporarily turn off your antivirus to see if thats the problem. Outlook is a bit of a memory hog, and if you have too many other programs running, it mightnt get enough memory to work properly. In other words, you can try closing other apps to give Outlook some breathing space. To troubleshoot the "Outlook Stops Responding" issue effectively, youll need to identify specific causes or causes in your scenario.

I would say first things first is figure out if any of Outlook not opening on Windows 10 these actually resolves her issue, and then (if so) document it on a quick 1-pager that she can follow if/when youre not available. When the scan is done and errors have been fixed, run scanpst.exe again until no errors are found anymore. If after scanning the file more than 3 or 4 times errors are still found, you might want to copy over your data in a new pst-file. We have tried all things mentioned above (except reconnecting the MS account), but the only solution so far is deleting the users profile. If I run an online repair and reboot her PC it will usually work for a day or two. Kinda at a loss at this point, I am thinking about wiping the PC and starting again.

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 Outdated or conflicting ones can mess with Outlooks core performance, causing unexpected slowdowns or outright failure to launch.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

Find solutions to common problems or get help from Outlook not opening on Windows 10 a support agent. If Outlook is NOT able to start in safe mode, then try the next proposed solution below, entitled Create a new Outlook profile. Outlook may be running with settings meant for an older Windows version. For more detailed instruction on how to enable or disable add-ins see this Quick Tip.If you you get an error that you cannot disable the add-in see this Quick Tip instead. The "Cannot open the Outlook window" error can be fixed quite easily. If you share this computer with another user, you can ask this other user to logon and ask to verify if Outlook is still working for him or her.

Some programs running on the back of your computer may conflict with Outlook and cause Outlook to crash. To see if thats 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 Outlook not opening on Windows 10 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.

Let's cover how to troubleshoot the Outlook indexing first. For all of the Mac users struggling with Outlook not responding, we have a few pointers for you as well. The page serves as a homepage for many people because it includes a link to Outlook, a weather update, aggregated news tailored to you, and Bing (Microsoft's search engine). Some of these accounts still exist as legacies, but it's confusing to sort through what is being phased out and what will remain available. To check if Outlook is not loading for everyone you can review the Microsoft Outlook twitter page, or check at a site like downdetector.com or isitdownrightnow.com.

Simply that Outlook will be loaded without your add-ins and customization files. Many users experience the same confusion by asking themselves, "Why is my browser so slow? " The problem of slow browser performance affects users of Google Chrome, Mozilla Firefox, Safari, Microsoft... Whether its creating a new outlook profile or setting up your primary email, weve got you covered. Sometimes a Windows update or app update—meant to fix things—ends up causing the problem.

To sum up, we explored several methods to fix "Outlook wont open" errors. Whether its a profile issue, a corrupted PST file, or faulty add-ins, the methods above can help you get Outlook running again. When Microsoft Outlook refuses to open, its incredibly frustrating. This issue often stems from common culprits like a corrupted user profile, a damaged data file (PST or OST), or even a minor conflict within its settings or add-ins.