SQL 2019 can run a compatibility mode at the database level back to sql 2008, but Eirikur is right, you will probably still have to tweak some things to make...

• This reply was modified 2 years, 1 month ago by  Jeff Fant.

Makes me think it is file level permissions on the directory you put the tempdb files in.  Just a first thing to check - off the top of my head. ...