Checklists for software errors, setup, and tool workflows.

How to Fix OpenVPN Certificate Verification Failed

You see "certificate verification failed" when connecting to an OpenVPN server. This usually mean...

Fix Windows Security Not Opening or Running Slow

If Windows Security (formerly Windows Defender) won't open or takes forever to load, it's usually...

Fix Windows 10 Activation Authentication Failed After Update

After a Windows 10 update, you might see an activation error like "We can't activate Windows on t...

How to Restart Remote Desktop Service from Command Line

If you need to restart the Remote Desktop service on a Windows machine—perhaps because users can'...

Fix Git Clone Permission Denied (publickey) on Bitbucket

You try to clone a Bitbucket repository and see:

Permission denied (publickey).
fatal: Co...

Fix 'Remote Desktop Command Not Found' in Linux

You try to start a remote desktop session from the terminal, but get command not found