I successfully installed WSUS role on server 2012 R2 and pointed its database to SQL 2012 during installation. I was prompted to specify the instance name, but since the sql is installed on the same server I entered the server name as was able to verify the connection. Database was successfully created in SQL, but when I try to open WSUS console, it opens up but does not connect to its service.
Came across someone else's post with a similar problem, but using wsusutil.exe postinstall SQL_INSTANCE_NAME=<database server name> fails.
I didn't specify CONTENT_DIR=C:\Wsus as I don't want to store updates locally until additional storage becomes available.
PS C:\Program Files\Update Services\tools> .\WsusUtil.exe postinstall SQL_INSTANCE_NAME=W2012\mssqlserver
Log file is located at C:\Users\Administrator\AppData\Local\Temp\2\tmpC758.tmp
Post install is starting Fatal Error: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 25 - Connection string is not valid)
