IIS FTP User Isolation with local user accounts has a very manual step that will fuck you up

As it is too manual to remember how to configure FTP on IIS in Windows Server 2012 R2 and above. I decided to document the main catch for me.

Big catch, using local users you turn on FTP User Isolation and everything stops working, you turn off isolation and the remote connections work again.

Make sure your FTP site has a virtual directory named 'LocalUser' in the root folder. Your user virtual directories will go in there.

The folder and the virtual folder MUST be named 'LocalUser' you are not allowed to call it anything else or connections will fail.

This needs to be reflected in the file-system. For example. C:\inetpub\FTPSite\LocalUser\Username1