
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. File and storage issues with Microsoft Office 365 are more serious than other issues. They are not merely inconvenient and slow down work but can also lead to critical data loss.

Services

Use the Microsoft 365 setup troubleshooter to install Microsoft 365, Office 2021, Office 2019, or Office 2016 on your Windows PC. To resolve, first make sure you installed the latest Office update. If you have a Microsoft 365 plan, to keep it active, you have to sign in at least once every 30 days. Keeping Office up-to-date ensures that you have the latest security updates and fixes. For information about installing updates, see Install Office updates.
- Check POP3 and SMTP settings for connecting to Microsoft mail servers (addresses of servers, ports, encryption, authentication).
- If your account is locked but you have not defined your recovery email address, try to fill out the Microsoft account recovery form.
- If there's a Learn More link on the error message, select that.
- Uninstall old versions of Microsoft Office from your computer and try to activate Microsoft Office 365 again.
- To keep using Word without interruption, choose the option below to reactivate.
- From here, review the details under the subscriptions heading or the cancelled subscriptions heading to confirm your subscription.
Activation or unlicensed product issues
How do I fix Office problems?
Tech AdvisoryRestart your computer. Sometimes, a quick reboot can fix minor problems with your Office programs. ...Check for updates. ...Repair office using the built-in tool. ...Check for hardware conflicts. ...Disable add-ins. ...Check your antivirus. ...Reinstall Microsoft Office.
If you're a student or teacher and don't see an option to install Office, you may be eligible for Office 365 Education, which includes Word, Excel, PowerPoint, and OneNote. Please let us know if you found any of these solutions helpful by leaving us a comment below. If it didn't, tell us more about your issue, including any error messages your received and where you were in the install process when you received it. We'll use that information to help investigate your issue further.
Microsoft Office 365 Activation Issues

For download and installation issues on a Mac, see What to try if you can't install Office for Mac. If you have to go this far during
Repair Microsoft email client actual Office repairs, my condolences. We’re going to download and run a tool that completely obliterates your current Office installation. Then you’ll download and install a fresh, new installation from the Microsoft Office download page. Office 365 troubleshooting is an important aspect of building a secure and reliable IT environment.
Install Office apps and set up email on a mobile device (iOS, Android, or Windows phone or tablet)
If individuals in your organization are using an older version of Office, we recommend you upgrade to the latest version. It could also happen because you haven't assigned a license to yourself or your users. See Uninstall Office for Mac for instructions on uninstalling the Office apps. Office up-to-date ensures that you have the latest security updates and fixes. If your admin has given you permission to install updates, see Install Office updates.
You can disable Add-Ins on launch by pressing CTRL and hitting the Microsoft Office app shortcut. In this case, consider using safe mode, which is useful for Office 365 troubleshooting. Installing Office 365 updates can fail for different reasons, and some of them are listed below. If you have forgotten your password for the Office 365 account, try to recover or reset the password.