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

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED Caused by Antivirus

When Chrome shows ERR_TUNNEL_CONNECTION_FAILED, it usually means a secure tunnel...

Fix OneDrive Sync Blocked by Third-Party Antivirus File Lock

OneDrive suddenly stops syncing files, showing errors like “Changes to can't be saved”...

How to Fix slmgr.vbs High Memory Usage During Windows Activation

If you notice that slmgr.vbs is using a lot of memory (often 100 MB or more) on your...

Windows Server Activation Error 0xc004f074: Fixes and Checks

If you see error 0xc004f074 when activating Windows Server, it usually means the Key Management S...

Fix NVM Not Found in Git Bash on Windows

How to Fix Remote Desktop 502 Bad Gateway Errors Related to Firewall Settings

If you're seeing a 502 Bad Gateway error when trying to connect to a remote desk...