Permission issues when adding server role or new login

  • I logon to the SQL server 2012 as administrator (builtin admin acct), but unable to add or modify server role for any AD users, showing permission error 15151. Then I logon to the domain controller server, everything under user/computers looks normal to me.... and already made sure I got admin on my own AD user acct as well, not working neither as admin or myself.

    Thanks in advance,

  • Do you have SysAdmin / SecurityAdmin role against your login or a group you are a member of on the SQL server?

    Builtin Admins hasn't been a member of SysAdmin as default for a number of versions of SQL now, but can be added if you need it.

  • You are right, and admin doesn't get sysadmin by default... and I had to set the server to a single user mode, added a sysadmin with command line 🙁 finally able to go in as sysadmin. Thanks

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