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

How to Fix WinRAR Checksum Error and Repair Corrupted Files

You download a large RAR archive, double-click to extract, and get a "Checksum error" or "CRC fai...

Task Scheduler Not Working After System Restore: Fixes

After a system restore, Task Scheduler may stop working—tasks fail to run, the console shows erro...

Fix Windows Update Invalid Configuration Without Reinstall

You try to run Windows Update and get an error like 0x80070002 or a message that the...

Fix Chrome Profile Port Already Allocated Error

Fix PowerShell Execution Policy Error on Windows

When you try to run a PowerShell script and see 'cannot be loaded because running scripts...