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

Firefox Not Responding? Try Safe Mode Troubleshooting Steps

If Firefox stops responding—freezing, crashing, or refusing to load pages—it's often due to a con...

How to Fix PowerShell Version Mismatch Error

Fix PostgreSQL Connection Refused from Docker Container

You have a Docker container that needs to connect to a PostgreSQL database. The container starts,...

Jupyter Notebook Token Not Working? How to Reset Password

You start Jupyter Notebook, see the token prompt, paste the token from the terminal, but it fails...

Fix OneDrive Token Expired Error (0x8004de40)

You open OneDrive and see an error like “Your token has expired” or code 0x8004de40. This usually...

Fix Windows Terminal 'Cannot Connect to Localhost: Permission Denied'

You open Windows Terminal, try to connect to a service running on localhost, and get a 'permissio...