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

How to Allow an App Through Windows Defender Firewall

If an app can't connect to the internet or network, Windows Defender Firewall may be blocking it....

How to Fix Cloudflare Error 521: Web Server Is Down

If you're seeing Cloudflare error 521, it means Cloudflare can't establish a TCP connection to yo...

How to Fix Windows Update Stuck at 0%

You click Check for updates, and the progress bar sits at 0% for minutes or hours. This is a comm...

How to Fix Windows Update Access Denied Error in Command Prompt

Fix PowerShell Cannot Connect to Office 365

You open PowerShell, run a command to connect to Office 365, and get an error: "Cannot connect to...

Fix 'chrome command not found' After Snap Install