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

Fix Windows Activation Error 504 Caused by Firewall Settings

You try to activate Windows and get error 504. This often means your firewall is blocking communi...

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...

Systemd Service Not Starting After Reboot: Practical Fixes

You've set up a systemd service, it runs fine when you start it manually, but after a reboot it s...

Fix a Corrupted Windows Terminal Configuration File

Windows Terminal stores its settings in a JSON file. If that file gets corrupted—often after a cr...

Fix 7-Zip 'Cannot Open File' Error When Repairing Archives

When you try to repair a corrupted archive with 7-Zip and get a “Cannot open file” error, it usua...

How to Fix systemd Service Restarting Repeatedly Error