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

Fix Version Mismatch and Permission Denied in Windows Update

When running Windows Update, you might encounter a "version mismatch" error followed by "permissi...

7-Zip 'Cannot Open File as Archive' Error: Malware or Not?

You try to open a file with 7-Zip and get the error 'Cannot open file as archive'. This can happe...

How to Clear Windows Defender Cache with a Tool

If Windows Defender is acting up—showing incorrect threat history, failing to update, or consumin...

How to Fix Command Prompt Error 0x80070005 (Access Denied)