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on November 6, 2025
Please install the latest updates on your phone to resolve the issue. Microsoft has released a Windows Hotfix file to remove the contacts folder synced by the Teams app. To help you get rid of these duplicates, we have released a fix which will Outlook performance fixes 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 can't receive new email messages, there are several troubleshooting steps you can take.
Outlook 2016 freezes when you try to preview an Excel file that's attached to an email. MAPI does not validate that a provider's DLL that it is requested to load is registered correctly in MapiSVC.inf or even that it comes from the local machine. Outlook performance fixes This can be exploited by creating a file together with an OLE object in such a way to cause MAPI to load a DLL from a network share when the OLE object is activated. The loading of unregistered MAPI services has been disabled by default to make Outlook more secure. This issue affects all Outlook versions on Windows 7, Windows 8, Windows 10. 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.
We also released a new rule that corrected the wrong campaign verdict for all impacted customers during the incident. 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 Installing any important, recommended, and optional updates can often correct problems by replacing out-of-date files and fixing vulnerabilities.
Recovery toolbox was able to rebuild my data files as a new data file on a replacement drive location and continue to use my mail file after the recovery process. Tried many other recommended solutions but none were able to help with the recovery apart from the recovery toolbox for outlook. Microsoft Outlook data files contain main objects ( messages, contacts, notes, reminders, attached files and others) and service objects that are not shown to the user. While writing the recovered data to the new .pst file, the program does not write some service objects because there is no need to do it. Try to recover your data to separate files, it may help. Make sure you have enough free space on your storage drive to save recovered data.
Microsoft Outlook users come various kinds of Outlook error messages and codes while working on it. But there are a few solutions that you can try to fix common Outlook issues and problems. Try Safe Mode, Create a new Profile, Recreating account, ScanPST.exe to repair PST file etc. If they all fail, then go for a reliable software which resolves PST file issues instantly. If Microsoft Outlook error message appears due to PST file issue, then it is quite easy to find the solution Outlook performance fixes for it.
If so, wait a short time (usually two or three minutes) to see if Outlook starts working again. A profile is a group of settings that controls how Outlook works. It includes a listing of your accounts, autocomplete information, and your name and initials. To repair your Outlook profile or create a new one, see Fix your Outlook email connection by repairing your profile. If that message has an attachment that's larger than 20MB, delete the attachment and either attach a smaller file or attach a link to the attachment. For more information, go to Reduce attachment size to send large files with Outlook or Exchange Online limits.
The browser version isn’t impacted by local Outlook files or add-ins. Outlook freezing or becoming unresponsive isn’t just frustrating—it can derail your entire day. Lost work, missed deadlines, annoyed colleagues… It’s the kind of headache no one needs.
If Outlook is in use by another process, this information is displayed in the status bar at the bottom of the screen. If you try to perform other actions while Outlook is in use, Outlook may not respond. Let the task in process finish its job Outlook performance fixes before you try another action. Performance may be decreased if you use the Outlook AutoArchive feature or sync to Outlook with a mobile device. These steps are provided in a specific order based on commonality and complexity.
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. 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.