Double-check your internet connection, as OneDrive requires an active network to sync files properly. For a larger cache of files, clear up local disable faulty add-ins in Outlook storage to ensure uninterrupted access. Open apps in Safe Mode to bypass add-ins and check for improvements. Perform a quick repair via "Programs and Features" to optimize performance.

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

By verifying the basics—correct credentials, valid license assignments, and stable network access—you’ll often fix the issue without delving into more complex solutions. Clearing cached credentials, running a repair, or using the Microsoft Support and Recovery Assistant (SaRA) can also address common local device issues. Verify that you’re logged into FixTechGuide Outlook repair tutorial the correct Microsoft account both in OneDrive and Office apps. If syncing is paused, resume it from the OneDrive system tray icon.

Recover your account

If the issue persists, Microsoft has created a dedicated tool called Microsoft Support and Recovery Assistant (SaRA) to automate many troubleshooting tasks. The tool will ask you to enter the email address or mobile phone number you're trying to sign in with and check the details you provide. If we detect a problem with your account, we'll tell you what you need to do to solve the problem.

3 Step 3: Verify Network Connectivity and Firewall Settings

• Combine these best practices with ongoing training and proactive license management, and you’ll be well on your way to a stable, secure Office 365 environment.
• If freezing persists, reinstall the app using files downloaded from your account dashboard to rule out bugs.
• If you can't sign into your Microsoft account, most issues can be identified by our sign-in helper tool.
• If you’re still stuck, reboot your computer and try the installation again, preferably during off-peak internet hours.
• Sometimes cached credentials on your device or a corrupted Office profile can lead to repeated sign-in prompts or activation failures.
• If we don't detect any problem, we'll guide you through how you can help yourself.
• If these connections are disrupted, sign-in and activation will fail.
• Regularly cleaning up your hard drive or upgrading hardware like RAM can also enhance performance.
• Run the Activation Troubleshooter, accessible online or via your app settings.

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 Troubleshoot Office 365 Sync and Login Issues once a connection is re-established.