It is the best PST repair software to repair and restore data from corrupt PST or password-protected files. You can save recovered PST data to DBX, MBOX, MSG, EML, TXT, RTF, HTML, and MHTML formats. It allows users to restore even large-sized PST files that are often not compatible with other tools. We have outlined the best methods for repairing Outlook 365 not working on Windows 10.

Additional resources

• Your program worked fantastic, and I successfully converted the .ost into .pst having back my old e-mails.
• I couldn't have done it without putting all the comments together.
• Find the Microsoft 365 app and right-click on it to see the available options.
• Follow the prompts to complete the repair process.
• Here are some of the reliable methods to restore Outlook 365 not working issue.
• It allows users to restore even large-sized PST files that are often not compatible with other tools.

I need to convert a large .ost file to a .pst file to set up a new laptop. Recovery Toolbox worked very well and relatively quickly. Had to re-install windows.I want to recover all pst, and ost. My PST got corrupted as it grew too large.

How to repair outlook?

All these methods are effective in resolving the issue. However, these methods are a little bit risky and time-consuming. To avoid risk and time, you can use our recommended tool as Repair Microsoft email client it has excellent features that can help you restore your corrupt or damaged PST files easily.

Quick Repair

Recovery Toolbox for Outlook can repair Outlook files of all versions. How to repair a PST file in Outlook in few clicks. Recovery Toolbox for Outlook can also fix 2GB error PST files. Later, you can divide a resulting file into several PST files, each being of a predetermined size.

Want more options?

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 Installing any important, recommended, and optional updates can often correct problems by replacing out-of-date files and fixing vulnerabilities. To install the latest Windows and Office updates, click the link below. If a Microsoft 365 application such as Word or Excel isn't working correctly, sometimes restarting it will fix the problem. If that doesn't work, you can try repairing it. When you're done, you might need to restart your computer.







This worked well although only the agenda item are restored, not the attachments and extra information field. If all the above steps failed, then use the Outlook Inbox repair tool to repair the PST file and replace the corrupted PST file in the Mail profile of Windows. It is mandatory to try all the free steps before using the Recovery Toolbox for Outlook. Do not use the Outlook Fix Tool until you have tried all of the above options. I exported from Oulook 365 a folder with a lot of e-mails, ans had a .pst 2,28 Go file. I could of course import the pst file in Outlook, but I did not wanted to do that, in order to avoid duplicates in Outlook.

How to repair Outlook PST files

In the Run dialog box, type "firewall" and click OK. Now, select from any of the given options, including Quick Repair and Online Repair. No more password error boxes on startup or every ten minutes. After brainstorming two days and compiling all the suggestions that the commentors on the board I've finally found the right way to fix all the Microsoft email issues.