Question

CREATE ASSEMBLY [RA.VantagePoint.Clr.Core]
FROM 0x[Assembly binary]
AUTHORIZATION [dbo]
WITH PERMISSION_SET = UNSAFE;

dbo is a syadmin and an owner, I am getting the following error:
Could not obtain information about Windows NT group/user XXXX (the user is the DB dbo)

this is a sql 2008R2 CS named instance
I am setting the database TrustWorthy to ON

Any ideas ?

Answer 1

If this is a long-term database (that is, one that’s been around a while), one possibility for this error is that the Windows domain account to which the “dbo” database identity was originally mapped no longer exists. You might be able to determine if this is the problem by running the following in sys.databases:

SELECT name, suser_sname(owner_sid) FROM sys.databases

If the second column is null, the described problem may be at hand.

The information for this notion came from this post on the MSDN forums.