I manually installed MS SQL 2016 and created a second instance ADOXX15EN (first instance was default SQLEXPRESS) following the instructions for Mixed Mode and SA password etc
here but then when I went on to run the setup.exe in ADOxx, at the point where it needed the SA password, I put the same password I specified and it failed (tried it with both instances).
I followed the instructions
here for resetting the SA password but this didn't seem to work either as input when on the ADOxx setup.
Am I missing something? Should I uninstall the MS SQL 2016 completely and start over a new manual installation?