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

How to Fix Git Detached HEAD State and Undo Changes

You run git status and see something like "HEAD detached at abc123". This ha...

Fix Nginx Configuration Test Failure from Rewrite Rules

You run nginx -t and get an error. The log points to a rewrite rule. This is common ...

Fix Nginx Permission Denied for Static Files

Common Causes

When Nginx returns a 403 Forbidden or 'permission denied' error for...

How to Fix Nginx Redirect Loop in Server Block

You set up a server block in Nginx, but now the browser keeps redirecting—http to https, or www t...

Fix VS Code Git Authentication Failed Keychain Error

If you see "Git authentication failed" in VS Code on macOS, the problem is often the macO...

How to Disable Windows Search Indexing Temporarily

If Windows Search is using too much CPU or disk I/O, or you're troubleshooting search issues,...