
Fix Windows Activation High CPU Usage with Clean Boot
If your system's CPU usage spikes after a Windows activation check, a clean boot can help identif...
Software troubleshooting desk

If your system's CPU usage spikes after a Windows activation check, a clean boot can help identif...

After a Windows update, some users see a proxy error in Outlook—something like “Cannot connect to...

If you manage a shared mailbox in Outlook and suddenly see an error about being rate limited, you...

Users sometimes see errors like "Can't connect to Microsoft Teams" or "Sign-in error" when DNS se...

You open Windows Security and see the message: "Windows Security failed to start. Corrupted syste...

If you notice your PC slowing down and Task Manager shows Windows Security (or Antimalware Servic...