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

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED When Using VPN

Fix Windows Activation Token Expired Despite Internet Connection

You see a message that your Windows activation token has expired, even though you're connected to...

Fix Windows Defender Service Not Running

If you see "Windows Defender service not running" or a red warning in Security Center, the underl...

Fix Windows Security 504 Gateway Timeout from Antivirus Conflict

If you see a 504 gateway timeout error when accessing websites or services, and you have both Win...

How to Rebuild a Single Service Without Cache in Docker Compose

When you run docker compose build --no-cache, Docker rebuilds every service from scr...

How to Fix PowerShell Setup Error 0x800f0950

When installing or updating PowerShell on Windows, you may encounter error code 0x800f0950<...