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

Enterprise Windows Activation Setup Guide

If you're managing Windows activation across many enterprise devices, you've likely encountered a...

Fix Windows Defender Threat Service Stopped & No Internet

You open Windows Security and see 'Threat service has stopped. Restart it now.' At the same time,...

Troubleshooting WinRAR Checksum Errors

When you extract a RAR archive and see a checksum error, the file is likely damaged. This guide c...

Fix Windows Search Error 0x80070490: Version Mismatch

If you see error 0x80070490 when searching in Windows, it usually means a component version misma...

Fix Windows Security Center Version Mismatch Errors

You open Windows Security and see a message about a version mismatch, or the Security Center serv...

Fix SSH Permission Denied (publickey) on Raspberry Pi