How to repair corrupted Outlook OST files?

You can disable all Outlook integration within the antivirus software. Or, you can disable any antivirus software add-ins that are installed in Outlook. In System Configuration, if you select a check box, the related service or startup program runs when you restart the computer. 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. Performance may be decreased if you use the Outlook AutoArchive feature or sync to Outlook with a mobile device. These processes can use fixoutlookhelp.wordpress.com/2025/10/29/repair-outlook-ost-and-pst-files-2025-guide/ a large number of resources. Find solutions to common problems or get help from a support agent. You may not expect this behavior, but the removal of the item is appropriate given the circumstances. Also, this specific kind of situation is rare, and it will always be entered in the ScanPST log file. Follow these steps to resolve a corrupted Send/Receive Group problem. Look for options like SMTP authentication and using the same settings as your incoming mail server. If you're still unable to send or receive email, read how to Fix Outlook.com email sync issues. Some customers may experience a delay when trying to create a new email address, or alias, for their Outlook.com account. We are aware that some users may not be able to receive email from Gmail accounts. The tool is efficient and saves a lot of time for the user. As the issue of Outlook stuck on loading profile is quite frustrating. So, we provided you with the methods to resolve and get rid of this error. Furthermore, all the methods are free of cost and you can apply any of them. If you are experiencing an issue with Outlook stuck on loading profile, follow the below procedures to resolve an error. Encountering a situation when Outlook is not opening a loading profile can be a headache and needs some actions to be taken seriously. This software also allows to recover Lost Attachments Edited from Outlook. This method using the SCANPST.EXE will not work if the PST Files are in bulk or they are encrypted. In that case, using a professional tool comes to your rescue. It’s also crucial to ensure that the version of Outlook you’re using is compatible with your Windows operating system version. 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. 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. I couldn’t find anything in the Event Viewer that points to the root cause, nor could I find any similar issues online. These troubleshooting techniques apply to Outlook 2016 and 2011 for Mac. You can also enable the OST file by turning on or turning off the Cached Exchange mode in Outlook. At a higher level, the more visible changes that you see involve folders and messages. If ScanPST determines that a specific block of the structure or table is unreadable or corrupted, ScanPST removes it. If that block was part of a specific item in Outlook, the item will be removed when it is validated. For instructions about how to unhide files and folders, see your operating system documentation. Clearing the Outlook CacheExit Outlook and Skype for Business.From the Start menu, choose Run.In the Run window, type this path in the Open box "%LOCALAPPDATA%\Microsoft\Outlook\"Click OK.Find the .ost file and rename or delete it (you may need to Show Hidden Files and Show Extensions to see the file)More items...•4 days ago To manage your mailbox by reducing the size of the Outlook data file, see Reduce the size of Outlook Data Files (.pst and .ost). If repairing your Microsoft 365 programs didn't resolve your issue, move on to the next step. 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? This option could be useful if you constantly have to wait for Outlook to rebuild its data file when you restart. Now fixoutlookhelp.wordpress.com/2025/10/29/repair-outlook-ost-and-pst-files-2025-guide/ that you have a better understanding of the potential causes. A vast community of Microsoft Office365 users that are working together to support the product and others. Connect with experts, discuss the latest Outlook news and best practices, and read our blog. Hello all,Same problem here since Outlook 2016 update on January on RDS 2022, all users are not concerned, but we have more and more users impacted. The cache file is likely corrupt or where it is stored is full. Try these troubleshooting steps in the order presented here, from simple to more complicated.