Checklists for software errors, setup, and tool workflows.

How to Fix Windows Activation SSL Certificate Error

If you see an error like "SSL certificate problem" or "There was a problem with the activation se...

Fix Windows Activation Port Already Allocated Error

When you try to activate Windows and see an error like "port already allocated" or "address alrea...

Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

If you're dual-booting Windows and Ubuntu, or replacing Windows...

Fix PuTTY Network Error: Connection Refused on Ubuntu

When you try to connect to an Ubuntu machine using PuTTY and see "Network error: Connection refus...

How to Fix PostgreSQL Password Authentication Failed for User

You see psql: error: FATAL: password authentication failed for user "youruser" when ...

How to Fix Windows Search 'Permission Denied' Error

When you search for a file or setting in Windows and get a 'Permission Denied' error, it usually ...