
Windows Update High CPU Usage Troubleshooting Checklist
If your system feels sluggish and Task Manager shows high CPU usage from TiWorker.exe

If your system feels sluggish and Task Manager shows high CPU usage from TiWorker.exe

You open Outlook and see the dreaded “Service Unavailable” error. This usually means Outlook can’...

If you notice Windows Defender (Microsoft Defender Antivirus) consuming a lot of memory—sometimes...

You try to open Outlook and get an error that the PST or OST file is locked by Windows file shari...

After a Windows Update, you might see an SSL certificate error when using Windows Search (e.g., s...

You start a Windows feature update, it downloads and prepares, but then hangs at the migration ph...