The permissions on various directories of the server have been reset. The permissions required by each directory and each software are different in one way or another, and it takes a lot of effort to configure them well.

After a long time, SERV-U was suspended.

Problem:SERV-U cannot start normally. Prompt "Unable to start the server. Missing server execution? "

Solution: Add SYSTEM full control permissions to the security tab in the folder properties where SERV-U is located.