
Fix High CPU Usage by MsMpEng.exe (Windows Defender)
If your system feels sluggish and Task Manager shows MsMpEng.exe using 30–100% CPU, Windows Defen...
Software troubleshooting desk

If your system feels sluggish and Task Manager shows MsMpEng.exe using 30–100% CPU, Windows Defen...

If you see DNS resolution failed when running a PowerShell command that tries to con...

You're trying to activate Windows, but the progress bar stays at 0% and nothing happens. This is ...

You're in a call or trying to send a message, and Teams shows a network error. The app may freeze...

If you recently switched networks—say, from a corporate VPN to a home Wi-Fi—and Windows Update no...

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