If you can’t open Outlook, or Outlook disappears or crashes, one of your add-ins may be to blame or you may need to update Outlook.

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

Later, you can divide a resulting file into several PST files, each being of a predetermined size.I couldn’t have done it without putting all the comments together.Recovery Toolbox worked very well and relatively quickly.Hope this helps and this was definitely the true fix I was struggling to find.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.

Simply I wrongly backed-up my old e-mail history in a .ost file instead of a .pst file, and I needed to check some of the e-mails contained in that file. Your program worked fantastic, and I successfully converted the .ost into .pst having back my old e-mails. The source file was not damaged I was converting my laptop from imap to pop email. I used your tool to convert the imap .ost file to .pst. Had my agenda only in the ost, so not synched to the webmail.After making a new profile my agenda items were gone. Used the Recovery tool for Outlook to restore the items to a PST from a backup of the old OST files.

Repair an Office application

If so, wait a short time (usually two or three minutes) to see Office 365 login issues 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.

Method 4. Change your Firewall Settings

How do I repair my Microsoft email?

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.

Want more options?

The trial version of the software is also available for free download, so you can try it before purchasing the full version. The Recovery Toolbox for Outlook technical support team can be a last resort in difficult cases. The development team can individually analyze the corrupt file and recover the maximum amount of data from the corrupt Outlook file. Technical support for the first year is included in the program price. The Microsoft Outlook Inbox repair tool includes an online version, found here.

Windows Explorer showed a size og 76gb, the recovered files is 50GB. I will still have to verifiy if everything has been recovered. There can be instances that your Outlook profile is corrupted, recreate a new Outlook profile to resolve the issue. Outlook being a great platform, still encounters some glitches and errors like Outlook 365 not working on Windows 10. This error leads to less productivity, especially if Outlook 365 is your default email client.

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.