Use the Microsoft 365 network connectivity test to measure connectivity between your device and the internet, and from there to Microsoft’s network. Use the MIcrosoft 365 inventory scan troubleshooter to generate either a normal resolve Outlook not sending emails fast or full scan report of your computer and installed Microsoft 365 applications. Use the Microsoft 365 sign-in troubleshooter to help resolve sign-in issues encountered with Microsoft 365. If you can't signinto your Microsoft account, most issues can be identified by our sign-in helper tool.

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

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. If you’ve tried all these steps and still can’t resolve the sign-in or activation errors, you may need more advanced troubleshooting. Completing the above steps resolves a large majority of Outlook Login Issues Troubleshooting typical sign-in and activation problems.

Recover your account

The Microsoft Support and Recovery Assistant can automate fixes for common error codes. The "Unlicensed Product" error usually indicates an inactive or unlinked subscription. Confirm your subscription status and sign in with the correct Microsoft account. Run the Activation Troubleshooter, accessible online or via your app settings.

3 Step 3: Verify Network Connectivity and Firewall Settings

• Microsoft 365 is a vital tool for many businesses, and login issues can significantly disrupt day-to-day operations.
• Sometimes, an expired license or outdated credentials are the culprit.
• If we detect a problem with your account, we'll tell you what you need to do to solve the problem.
• Close unused tabs, background processes, or applications to free up system resources.
• Locked accounts, due to multiple failed attempts, may require waiting or following unlock instructions.
• Online guides from Microsoft provide extra steps to speed up slow applications.

For manual uninstallation, delete leftover Office files in Program Files or Library folders, and clear Microsoft credentials from your system to ensure a clean reinstall if required. If your account is compromised or hacked, use Microsoft’s sign-in helper to recover your account and reset your security settings. If you are unable to do this and have exhausted all the other fixes, then contact Microsoft Support for professional account recovery. Microsoft 365 is a vital tool for many businesses, and login issues can significantly disrupt day-to-day operations. 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. If you’re confident your credentials are correct and the sign-in still fails, proceed to the next step for deeper inspection of license status and subscription details.

Microsoft 365 Troubleshooting – Quick Fixes for Common Problems

Simply open the Office app normally, and all your files are saved locally until internet access resumes. For cloud-based services like Outlook or OneDrive, offline access won’t work until you sync online again. Make sure to save any updates for immediate syncing FixTechGuide mailbox repair steps once a connection is re-established.