For codes linked to storage limitations, free up disk space or install on an external drive. The Microsoft Support and Recovery Assistant can automate fixes for common error codes. Start by verifying your subscription status to ensure it’s still active. Go to any Office app and ensure you’re signed in with the same Microsoft account linked to your license. Remove and re-add your account under the "Account" settings of the app if needed. If this doesn’t work, reset the credentials in your Windows Credential Manager or contact Microsoft support for further assistance.

How do I fix the ‘Product Activation Failed’ error in Microsoft 365?

Remember, proactive management and regular reviews of your IT infrastructure can prevent many common issues, keeping your business operations running smoothly.Additionally, ensure you’ve installed all available updates, as performance improvements are often included in patches.If you can't sign into your Microsoft account, most issues can be identified by our sign-in helper tool.Troubleshooting Microsoft 365 login issues often requires a methodical approach, starting with basic checks and escalating to more complex troubleshooting if needed.If one of these resolves your problem, close the app and continue working.Verify that you’re logged into the correct Microsoft account both in OneDrive and Office apps.

For syncing or email issues, verify your mobile connection or switch between WiFi and cellular data. Reinstall the app if problems persist using Microsoft’s compatibility manuals. Slow-loading apps may indicate excessive add-ins or cache issues. Open apps in Safe Mode to bypass add-ins and check for improvements.

In this guide, we will take an in-depth look at troubleshooting and resolving common Microsoft 365 login problems so you can keep your business running smoothly. Slow performance can be due to heavy CPU usage or low available memory. Close unused tabs, background processes, or applications to free up system resources.

Microsoft 365 shared computer activation (SCA) troubleshooter

This article will help you troubleshoot sign in issues when activating Microsoft 365 Apps. After you run any troubleshooter, Get Help provides details on any findings and suggestions for possible remedies. If one of these resolves your problem, close the app and continue working. Use the MIcrosoft 365 inventory scan troubleshooter to generate either a normal or full scan report of your computer and installed Microsoft 365 applications. Find solutions to common problems or get help from a support agent. Use the Microsoft 365 network connectivity test to measure connectivity between your device and the internet, and from there to Microsoft’s network.

Troubleshooting Specific Scenarios

Additionally, ensure you’ve installed all available updates, as performance improvements are often included in patches. Regularly cleaning up your hard drive or upgrading hardware like RAM can also enhance performance. For manual troubleshooting for step 7, or for more information, see Fix authentication issues in Microsoft 365 applications when you try to connect to a Microsoft 365 service.

cannot sign in to office 365

Check your internet connection, as weak connectivity can cause issues. For work or school accounts, confirm with your organization that your account is active. Browser or app issues, like outdated software or cached data, can also interfere