title: Could not obtain information about Windows NT group / user, error code 0x3a
body: <p>I am trying to deploy a SQLCLR library to SQL Server 2008 R2. In visual studio I have set up the data connection and it works correctly (I can run queries), but when I try to deploy I get the message "Error: Could not obtain information about Windows NT group / user , error code 0x3a." </p>
  
  <p>This is strange because I have set up the data connection to use SQL server authentication on a different user name. </p>
  
  <p>I receive the same error when I run CREATE ASSEMBLY while logged in to the SQL management studio with the different user name. </p>
  
  <p>To add to the mystery, when I deploy using permission set SAFE everything is fine. However my assembly requires EXTERNAL ACCESS. </p>
  
  <p>What could be the problem with deploying my assembly? </p>