Can you test from the SIM server to the target via cmd line if you get information back with the account.
C:\>wmic /node:IPofTarget /user:"Domain\User" /password:"password" path win32_computersystemproduct get uuid
Can you test from the SIM server to the target via cmd line if you get information back with the account.
C:\>wmic /node:IPofTarget /user:"Domain\User" /password:"password" path win32_computersystemproduct get uuid