I am really starting to regret upgrading to SQL2019. I had to install SQL2017 Express along side of 2019 just to get my TFS working again. Now, if I run SSMS from any computer other than the local host I get the blue question mark and cannot start/stop the database server. I am logging in as 'sa' and queries run fine. The number one answer seems to be firewall but mine are all disabled. I have also tried checking the Allow Remoted Enable permission for all the ROOT\CIMV2 users which I have never had to do in any previous version of SQL Server, but didn't work anyway. I have tried everything on StackExchange but I think 2019 is different from 2016 so nothing is working. I don't use a domain so I need to be able to use 'sa' as my login.