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

Certbot Renewal Failed Due to Nginx Configuration: How to Fix

GitHub Actions Workflow Not Triggering: Fixes & Checks

You've set up a GitHub Actions workflow, pushed a commit, and nothing happens. The workflow doesn...

Fix Task Scheduler Not Starting After Reboot

If your scheduled tasks stop running after a reboot, the Task Scheduler service may not be starti...

Fix Windows Activation Failed Due to Product Key Mismatch

You see "Windows activation failed due to product key mismatch" after entering a key or during an...

How to Enable Windows Defender When It Keeps Crashing

If Windows Defender keeps crashing or won't stay enabled, you're not alone. This usually happens ...

Fix SSH Host Key Verification Failed for GitHub

When you try to clone a repository or push to GitHub over SSH, you might see an error like: