Why is the \"Run As\" drop down list is always empty when I try to set up a SQL Agent Job? I am trying to set up some SQL Agent Jobs to run using a proxy account. I am a member
I found the answer to this. Users who are not sysadmin have to have access to the proxy account explicitly granted to their role or username:
To grant access to proxy accounts for non-sysadmins
On the General page, you can change the proxy account name, credential, or the subsystem it uses. On the Principals page, you can add or remove logins or roles to grant or remove access to the proxy account.
http://msdn.microsoft.com/en-us/library/ms187890(v=sql.100).aspx