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

Fix Task Scheduler Error 0x80070020: Port Already in Use

When you see error 0x80070020 in Task Scheduler with the message "port already in use," it usuall...

Fix Chrome Profile Access Denied After Update

After a Chrome update, you might see an error like "Your profile could not be opened correctly" o...

Windows Defender High Memory Usage Troubleshooting Checklist

Windows Defender (Microsoft Defender Antivirus) sometimes uses more memory than expected, especia...

Certbot Renewal Failed Due to Nginx Configuration: How to Fix

Jupyter Kernel Dead: Common Causes and Fixes

You're working in a Jupyter notebook, and suddenly the kernel dies. The notebook becomes unrespon...

Reduce Command Prompt Memory Usage: Practical Steps

If you notice the Command Prompt (cmd.exe) consuming more memory than expected—sometimes hundreds...