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

How to Install an SSL Certificate in Chrome Manually

You may need to manually install an SSL certificate in Chrome when testing a local development si...

How to Fix Jupyter Notebook Token Authentication Error

When you start Jupyter Notebook, you might see a prompt asking for a token or password, or the br...

How to Fix 'Chrome File Locked by Sync' Error

If you see a 'file locked by sync' error in Chrome, your browser is trying to sync bookmarks, his...

Fix Command Prompt Not Recognizing Commands

Fix Windows Activation SSL Certificate Error via Registry

When trying to activate Windows, you might see an error like "0x80072F8F" or "SSL certificate err...

Fix Windows Defender Access Denied Error on Startup

If you see 'Windows Defender failed to start access denied' when you open Windows Security or aft...