How to troubleshoot login failures and slow indexing after installing Cursor?

When installing Cursor for new hires, they usually get stuck on two things: the login loop and the project indexer hanging for a long time. I usually first check if the system proxy or company VPN is blocking the OAuth callback, and then see if the default browser is being blocked by security plugins. If login is normal but indexing is slow, don't rush to reinstall; exclude node_modules, dist…