this one helps. Are you 100% certain that the new environment is indeed Express? If so, you may need to configure the server to allow user instance connections. If you have admin access, you can run this command.
-- Enable user instances.
sp_configure 'user instances enabled','1'
-- Disable user instances.
sp_configure 'user instances enabled','0'
The user instance login flag is not supported on this version of SQL Server. The connection will be closed
wish help you to fix your issue SQL Server 2005(Full Version) does not support the "user instance"(automatic creation of databases from code) directive in the connection string. Its a feature of sql server express edition. Also if your connection string has user Instance attribute, then try removing the "User Instance=True;"
Getting error "The user instance login flag is not supported on this version of SQL Server." but not using thi
should help you out Not sure what was wrong, but I deleted and re-cloned my git repository. Error went away.... never getting that day back... lol. I'll leave the post in case any of this is helpful to others.
The user instance login flag not allowed with this version of sql server. SQL Server 2012 Enterprise