Question

I have a script that grants permission to assemblies in a DB, but the execution fails on this saying that NT AUTHORITY\Authenticated Users doesn’t exists.

This is a non English system.

Answer 1

You can combine little bobby and David’s answers:

On an english system, get the SID of the account you want:

  select suser_sid('NT AUTHORITY\authenticated users')

In code use this sid to obtain the local name:

 select suser_sname(0x01010000000000050B000000)

Between these two you can obtain the name and build a dynamic SQL to grant the permission you want.