I am not able to see the credential box in login properties.
1.Basically, I want to create a proxy account. For this I first created the credential as a domain group whose login already exists on the server:
domain\NTgroup
2. Then I tried to map this login domain\NTgroup to the new credential, but it's greyed out in this login's properties. Moreover, when I try to create proxy I get an error: domain\NTgroup is not a valid user. But is's sysadmin on sql server.
I get the same error if I create a credential with NT user rather than group, also with full admin rights.
Thanks