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

Fix Microsoft Teams DNS Errors: Service Unavailable

When Microsoft Teams shows a 'service unavailable' error, it often points to a DNS resolution pro...

Windows Security Configuration Checklist

If you're setting up a new Windows machine or reviewing an existing one, a security checklist hel...

How to Fix Windows Activation Port Already Allocated Error

When activating Windows, you may see an error message like "The activation port is already alloca...

Fix VirtualBox Kernel Driver Not Installed on Windows 10

Stop Command Prompt High CPU Usage When Idle

You open Task Manager and see Command Prompt (cmd.exe) using 20-40% CPU, even though no windows a...

Fix SSH Host Key Verification Failed in Ansible

When running Ansible playbooks or ad-hoc commands, you might see the error Host key verific...