Knowledge base for software setup, errors, and daily tool work.

How to Backup and Restore Windows Activation: Step-by-Step

If you've ever replaced a motherboard or reinstalled Windows and been prompted to reactivate, you...

PowerShell Command Not Found but Works in CMD

Fix Task Scheduler Error 101: Failed to Start

You see Event ID 101 in the Windows Event Viewer under TaskScheduler, and the task didn't run. Th...

How to Fix Remote Desktop Permission Denied Error

When you try to connect to a remote Windows machine and get a 'permission denied' or 'access deni...

How to Fix Windows Security High Memory Usage

You open Task Manager and see Windows Security (or Antimalware Service Executable) using 500 MB o...

Fix Windows Activation Update Error 0x80070002

If you see error 0x80070002 when trying to activate Windows or install updates, it usually means ...