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

Enable Windows Defender After Group Policy Disabled It

If Windows Defender is disabled and you suspect a Group Policy setting is the cause, you may see ...

Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

If you're dual-booting Windows and Ubuntu, or replacing Windows...

Fixing 'kubectl apply' RBAC Permission Denied Errors

When you run kubectl apply -f manifest.yaml and get a forbidden err...

How to Fix Command Prompt Dependency Conflict in Java

When you see a dependency conflict in the command prompt while running a Java application, it usu...

Fix Chrome Not Working with Proxy on Ubuntu

You configured a proxy in Ubuntu, but Chrome ignores it or throws connection errors. This often h...

Fix Docker Build 'exec format error' for ARM64 Images

When building a Docker image for ARM64 (e.g., on Apple Silicon or AWS Graviton), you may see an e...