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on January 15, 2026
Microsoft periodically releases Windows updates and service packs. Having the latest updates and service packs can help improve your computer’s overall performance as well as Outlook’s performance. Items moved into new folders will still be located when searching a mailbox. You can use Microsoft Support and Recovery Assistant to diagnose both Calendar and Mail issues that affect Outlook. To download and install the Assistant, see About Microsoft Support and Recovery Assistant.
It offers various facilities to the users, allowing them to complete the process smoothly and confidently. In addition, this software has a straightforward GUI, so every user will be able to fix PST files without hassle. Users can process many Outlook data files (.pst) in single go using this professionals’ recommended tool. Whether you are a Microsoft Outlook, Exchange or Office 365 user, you may come across or encounter the PST files.
Similar to our earlier suggestion of repairing Office (see #3 Repair Your Microsoft Office above), perform the same steps except choose to Uninstall. Be aware that you may need your product key if you received one. If you need to update your email's POP or IMAP account settings, please go to POP and IMAP account settings for more information. However, if you want to change your password with your email provider, you'll need to visit their website or help desk, or contact your email administrator. For example, if you have a Yahoo! account, you first have to change your password at Yahoo.com. Once you've changed your password with your email provider, you can update the password in Outlook.
We have shared everything on the manual and professional ways to fix Outlook data files or Personal Storage Table (PST) in this blog. Also, we go over the stepwise working procedure of both solutions and the reasons behind PST file corruption issues. The Inbox Repair tool or ScanPST.exe is not a convenient way because of multiple restrictions. The best solution to avoid manual challenges and complete this task effectively is the Shoviv Outlook PST Repair Tool.
Step 1 - For both Windows and MacOS users, Microsoft Outlook has the Outlook Fix Blog ability to recover deleted items Outlook Desktop App. Microsoft has its own tool for automatically scanning and correcting Office when things go awry. You can read about it and then run the Microsoft Support and Recovery Assistant to see if that helps. It can automatically diagnose issues, troubleshoot, and fix problems with Outlook. Note that the above link is for desktop Outlook for Windows. A more general version that can also fix Office, Microsoft 365, and other Outlook problems can be found here.
The easiest way to let the indexing finish is to leave Outlook running overnight.Additionally, you can Outlook Fix Blog reduce performance issues by running Outlook in Cached Exchange Mode. In this mode, Windows Search or WDS searches the local copy of the mailbox instead of the mailbox content on the server. Adjusting Outlook's Send/Receive schedule can often improve performance. If your send/receive schedule is set to check less-frequently, say, every 30 minutes, try changing it to send/receive every 3 minutes.
If your computer is running low on resources, Outlook will freeze up. If Outlook isn't stuck at a screen that says "Processing," or this didn't resolve your issue, continue to the steps below. If those steps don't work, see Need additional help? There are a number of possible reasons for Outlook to behave this way. We've presented the potential solutions in order from quickest to most time consuming.
No validation is explicitly done on body-related properties or on subject-related properties, except the implicit low-level validation that this article discusses earlier. The recipient display properties are changed to be consistent with the recovered recipient table. As soon as this operation is complete, other algorithms are run to collect all the orphaned messages and to put them in an Orphans folder.
For more information, please see Access to Microsoft 365 email and applications by audience. For information about Microsoft 365 storage quotas, please see Microsoft 365 storage quotas and information. If you have enabled Online Archive Mailbox, archive items to the Online Archive Mailbox.
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. Use the Turn on shared calendar improvements option for users who have edit permissions to a shared calendar to improve performance. When you enable this option, calendar actions are sent directly to the server instead of having to be synchronized from local storage. I even reduced mailboxes sizes and that didn't help, I setup a new user (albeit existing PC but new windows profile), and he is having the same issues. If the mailboxes open automatically after removing them and restarting Outlook, they may be auto mapped. This setting can be changed by an Exchange admin by submitting a Outlook Fix Blog request via Jira and including the usernames of the client and the usernames of the mailboxes that need to be removed.