To diagnose and automatically fix several common Microsoft 365 sign-in issues, run the Microsoft 365 Sign-in troubleshooter. The authentication issue occurs because of missing package information about either the Active Directory Authentication Library (ADAL) or Live ID. This issue occurs only on computers that are running Windows 10, version 1703 or later, and Microsoft 365 version 1807 or later. I figured it was a bad credential, and everyone mentioning ADAL pointed me to the right one. I don’t know if this is a permanent fix, but it got me back online. If i run and install the AAD Plugin as shown, it’s fixing the issue.

Microsoft Support and Recovery Assistant

Spent weeks with MS support and he got rather irritated when they told him to disable ADAL. He then started digging into Windows and how modern auth works and came across the above fix. As soon as he figured it out he handed the full fix to MS support with all instructions as shown above.

Unresolvable Problem on Signing In Microsoft Office 365 Apps on Windows 10

The only fix is to delete the Teams folder in %appdata%\Microsoft and delete the Outlook profile and re-create it.If after running the Remote Connectivity Analyzer Office 365 issues are not fixed, try using Microsoft Support and Recovery Assistant.Speaking of research, I haven’t found much info newer than December 2018.Only Office 365 administrators can access this tool in the Office 365 admin center.So hopefully the official MS support answer and documentation will change.Microsoft recommends updating Windows, Microsoft Office and other software regularly.

My main concern is that these dialog boxes may return, prompting further user frustration and possibly generating tickets. Speaking of research, I haven’t found much info newer than December 2018. I haven’t opened a ticket with MS yet but I may if my search does not prove fruitful. Once the key is added, and the user restarts Outlook, they receive a legacy authentication dialog box, enter their domain password, and connect to custom led signage their mailbox without issue. This seems to be our most effective fix, and it’s the one we arrived at after hours of forum digging and web searches.

How do you repair Microsoft Office?

Microsoft 365 Issues with the Safari Browser

If your Office 365 subscription has expired, buy a new license and extend your subscription for a new period. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. But as soon as i log out and log back in, the plugin desactivates itself and the authentication bug comes back. Get a free trial to explore all the solution’s data protection capabilities. Domain verification issues can also prevent the normal use of the Microsoft Office 365 suite.

Difficulty in updating a SharePoint file with another user

In this case, consider using safe mode, which is useful for Office 365 troubleshooting. An internet connection is not available or a firewall is blocking network connections. Installing Office 365 updates can fail for different reasons, and some of them are listed below.

Organizations value the capabilities that the Microsoft 365 suite provides for shared access and simultaneous file editing for team members. However, sometimes employees may not have the required permissions to open and edit an item. If you have forgotten your password for the Office 365 account, try to recover or reset the password.