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

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED on Windows 10

If you see ERR_TUNNEL_CONNECTION_FAILED in Chrome while browsing on Windows 10, ...

Outlook Token Expired When Sending Email: Fixes & Checks

You're composing an email in Outlook, hit Send, and get an error about an expired token. This usu...

Fix Windows Update Error 0x800f0922: Pending Install Failed

You see a message that a Windows update is pending install, but it fails with error 0x800f0922. T...

Certbot Renewal Failed Due to Nginx Configuration: How to Fix

Fix Windows Activation Error 504 on VPN Connection

If you see error 504 when trying to activate Windows while connected to a VPN, it usually means t...

How to Fix Windows Update Certificate Trust Error

You see a message like "Windows could not search for new updates" or "An error occurred while che...