Unable to start instance (windows) - fixed it

Had problems starting AMP like I normally do when server restarts.
I finally got it to start up but now I get this message.

Ran the installer again and now it works.

Don’t edit files with the Windows File Explorer, that’ll break file perms. Use AMP’s built-in SFTP instead, as that preserves file perms.
Run ampinstmgr fixperms in CMD, or manually give NETWORK SERVICE ownership in the datastore