If you are having a lot of end-user support headache because of Office365 quirkiness… well, it may very well be because this rather critical module is missing. We haven’t identified WHY it is missing for some user Win10 installs and not others yet. OneDrive issues are a separate category of problems with Microsoft 365. They can either be simple, like the OneDrive service not running or the missing OneDrive icon on the taskbar, or more complex, like OneDrive conflicting with Microsoft 365. Below we provide a more detailed list of issues and corresponding solutions. Editing file permissions and providing users with appropriate access is a simple way to solve such Microsoft 365 problems.

Microsoft 365 Issues with the Safari Browser

Once the key is added, and the user restarts Outlook, they receive a legacy authentication dialog box, enter their domain password, and connect to their mailbox without issue. This seems to be our most effective fix, and it’s the one we arrived at after hours of Resolve Outlook data file errors forum digging and web searches. Information and fixes from Microsoft have been scant as well, outside of the registry key one.

Microsoft Support and Recovery Assistant

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. Organizations value the capabilities that the Microsoft 365 suite provides for shared access and simultaneous file editing for team members.

Microsoft 365 Issues Related to Updates

Uninstall old versions of Microsoft Office from your computer and try to activate Microsoft Office 365 again. This works for a week and then the issue raises it’s head again. And it’s random users, not all users experience this in this environment. We inherited this client and it took us 2 weeks to discover that whoever setup their O365 tenant originally hadn’t enabled Modern Authentication. We enabled it thinking that would fix the problem, but sadly no.

• If multiple versions of Microsoft Office are installed, Office 365 activation issues may occur.
• If an incorrect password is entered multiple times, after several unsuccessful login attempts, your Office 365 account will be locked.
• I highly recommend NOT just disabling modern authentication using that registry entry because you will have all manner of headache with other Office365 applications.
• Then try to activate the installed Office 365 suite again on your computer.
• If your Office 365 subscription has expired, buy a new license and extend your subscription for a new period.

Office 365 won't log in without EnableADAL = 0

If someone has some other thing to check or look at, I’m all ears because MS an their authentication issues are becoming a joke. You’d think after 10 years of O365 being used, the last thing you’d have issues with is Authentication… Yet here we are, same issue, different decade. We haven’t seen this issue arise when a user is on a machine that was originally imaged with Office 365. If your Office 365 subscription has expired, buy a new license and extend your subscription for a new period.

Common Problems with Office 365 OneDrive

Still, the files you send to the recycle bin are not permanently removed. Check POP3 and SMTP settings for connecting to Microsoft mail servers (addresses of servers, ports, encryption, authentication). If you use Microsoft Office 365 Outlook as a standalone email client, and you cannot send and receive email messages, check the Outlook connection settings. Make sure that network access to the Microsoft servers is not blocked.