sql server 2012: cannot alter the login sa

Question

I\'m trying to create a database on my local machine using SSMS version 11.0.2100.60. I\'ve run the application as administrator, logged in using Windows authentication, and

Answer 1

I'd like to point out an alternative answer laid out on DBA SE. Download PSExec onto the box that is having the problem and follow the instructions laid out in this blog post to effortlessly change admin settings using the NT Authority\System account.

./psexec -s -i "C:\...\Ssms.exe"

Wanted to share this solution as it solved my problem!