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.

Repair/Re-install Outlook 365, 2021, 2019, 2016, 2013, 2010, 2007, 2003

• This free application can quickly detect and fix issues with Outlook, Microsoft Office, Microsoft 365, and Microsoft Teams.
• 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.
• The steps to access the repair tool vary depending on your operating system.
• There can be instances that your Outlook profile is corrupted, recreate a new Outlook profile to resolve the issue.
• Recovery Toolbox for Outlook can also fix 2GB error PST files.
• In the Run dialog box, type "firewall" and click OK.

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.

Check for updates

If so, wait a short time (usually two or three minutes) to see custom led signage if Outlook starts working again. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. The conversion from OST to PST was quick, accurate and at minimal cost.Thank you. This free application can quickly detect and fix issues with Outlook, Microsoft Office, Microsoft 365, and Microsoft Teams. Whether your Outlook is unresponsive or frequently crashes, this program can help you troubleshoot and fix the root cause of the problem with ease.

Troubleshoot Outlook for Windows issues

Tried many other recommended solutions but none were able to help with the recovery apart from the recovery toolbox for outlook. There are many methods to repair Microsoft Outlook 365, but none can deal with highly corrupted PST file. In such case, Kernel for Outlook PST Repair tool comes in handy.

Microsoft Office Apps need Repair

My Outlook PST files (30+GB) were still accessible but running off a hard-drive that had started to fail with bad sectors. I was unable to clone the drive or copy the PST files to a new location. 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.







The Outlook Online Repair Service allows you to repair corrupted PST/OST files on any device (desktop, tablet, phone) with any OS (Windows, Android, macOS, iOS and so on). The PST Online Repair Service does not require Microsoft Outlook to be installed and does not need to have any third-party software installed on your device. Also, you can recover permanently deleted items and attachments from Outlook with the help of this Outlook repair tool. You can even migrate PST files to Office 365, email servers, and web email clients with the help of this software. The file I was trying to repair, had nothing wrong.

Uninstall and reinstall the new Outlook for Windows

So, I used Toolbox recovery to convert the pst file in msg, ans I copied and paste the msg files in Outlook, and it worked perfectly. I wanted to send a large pdf file (20Mb).While sending I disrupted this process (turned off pc?). As a result I had an unclosed mail in my pst-file. As a result my pst-file was corrupted and my outlook could no longer be started/opened.This tool fixed PST-file. If you don't have a Windows computer with the desktop version of Outlook installed, then you can repair a corrupt PST file by using a special online service here.