I set up my visual studio to always run as administrator. When I create a new Entity Data Model, and try to point to the data source to a specific database, I get the error "Login failed. Log in is from an untrusted domain...."
I think that since I set VS up to run under administrator, Administrator needs access to at least one database, so I set that up as well.
But I am still getting the same issues.
See screenshots.
There is a bug with Microsoft. The server name dropdown box doesn't always list the right servers. It was listing a server that did not exist. Somehow, it gets this information, from somewhere--I don't exactly know how--but I did have the posted server name on a different machine at one point in time. I clicked on the ddl and picked the first one, assuming it found my server, but in fact the server did not exist. I had to copy paste this in: DESKTOP-DLASSIT\SQLEXPRESS Because that was the real name of my server. Then, it worked...