The Old New Thing

A user's SID can change, so make sure to check the SID history

November 28, 2014 Nov 28, 2014 11/28/14

Raymond Chen

It doesn't happen often, but a user's SID can change. For example, when I started at Microsoft, my account was in the SYS-WIN4 domain, which is where all the people on the Windows 95 team were placed. At some point, that domain was retired, and my account moved to the REDMOND domain. We saw some time ago that the format of a user SID is...