1 Outlook crashes or stops responding when used with Office 365
Stefan Campion edited this page 2025-09-29 22:46:23 +08:00
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If you upgraded from Outlook 2003 to Outlook 2007, some people have reported that reseting a few internal Outlook files helps with performance. Microsoft has identified several issues with a recent Outlook updated (KB ). To access the filtering options faster, add them to your Quick Access Toolbar. The loading of unregistered MAPI services has been disabled by default to make Outlook more secure. When you try to accept a shared Outlook.com calendar using your Microsoft 365 for business account in Outlook 2016, you might receive the "Something went wrong" error or your sign-in might fail.

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.

One reason Outlook fails to launch is that youve installed faulty add-ins in the app. These add-ins may be working incorrectly, causing the app not to launch. 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.

Contact your IT administrator Outlook not opening on Windows 10 to verify if restrictions are in place and request assistance. Find solutions to common problems or get help from a support agent. Post questions, follow discussions and share your knowledge in the Outlook.com Community.

To avoid any issues, employees may be advised to switch Outlook not opening on Windows 10 back to the classic version of Outlook. The dashboard's performance tab identifies potential performance issues and correlates with common root causes. This information can be used to inform support teams to assist in making appropriate decisions, such as changes to the application or upgrading the affected devices. In some cases, the ScanPST.exe freezes or fails to repair a corrupt PST file. This happens when the PST file you are trying to repair is large, severely corrupt, or encrypted.

Follow the on-screen instructions to update your Office apps. Then, launch your Outlook app, and it should open without problems. If your PC has a virus or malware infection, that may be why Outlook isnt launching. In this case, run a full virus check on your PC to find and remove any threats.

If not, you can try reinstalling Office 365 or repairing it. To sum up, the blog elaborated on all the major reasons for Microsoft Outlook keeps crashing problem. Furthermore, we learned six manual solutions to fix this issue. So, for a worry-free and risk-free conversion, using the professional tool is the optimum choice. I disabled all add-ins and started Outlook in safe mode but the crashing problem continued.

Start Outlook in safe mode to fix "Processing" screenIn Windows 10, choose Start, type Outlook.exe /safe, and press Enter.In Windows 7, choose Start, and in the Search programs and files box, type Outlook /safe, and then press Enter.In Windows 8, on the Apps menu, choose Run, type Outlook /safe, and then choose OK.

In this case, you can reset your view settings before opening the Outlook not opening on Windows 10 app. Select your Microsoft Office installation on the list and choose "Change" at the top. In this case, open Outlook in safe mode where your add-ins arent loaded and remove any suspicious add-ins. In most cases, Outlook doesnt tell you why it isnt opening, which leaves you guessing as to what has caused the issue. Due to underlying system or PST issues, Outlook may crash, freeze, or not function properly. Find solutions to common problems or get help from a support agent.

If the network is performing slowly, Outlook must wait for read and write operations to the AppData directory to finish. We recommend that you move several items in your larger folders to separate folders, or that you archive those items by using the AutoArchive feature. Make sure that the latest updates for Outlook are installed. For more information, see How Outlook not opening on Windows 10 to install the latest applicable updates for Microsoft Outlook (US English only). For more information, see Support for Office 2016 and 2019 clients connecting to Microsoft 365 services has ended. Running the /resetnavpane command removes all customizations to the navigation pane.

To check if you have received the fix, review your contact list to confirm duplicates have been removed. To help you get rid of these duplicates, we have released a fix which will automatically clean up your contact list. This fix will clean up duplicate contacts for end users starting August 9, 2023. Rollout of the fix to all users will take few weeks, so, some users may see the fix applied by the end of September.

If you need to increase the number of this limit try the next resolution. Step 1 - The hard limit of recipients for a single email message is 300. Reduce the number of recipients for a single email to less than 300. Step 2 - Follow these instructions to install your Office application. Step 1 - Follow these instructions to uninstall your Office applications. If Outlook Desktop fails to connect, try these steps before escalating the issue to the ET&S Help Desk.