Hi Mates,
this is a new section that wants to describe, briefly, what happens every day in my technical-sysadmin life.
I don't want to bore you with complicate concepts but only to focus on a simple "adventure" that every day "stole" me sometime (leaving also on me something that I had forgotten or that I didn't know).
Today I had to face up with a GPO in a customer Active Directory domain (Windows 2008 R2). Practically the customer told me that even if the value of the parameter "Minimum password age" was set to 0 she was not able to change repeatedly her password.
The core of the issue was that being her a SysAdmin she was added in a group (Shadow) part of the Fine-Grained Password Policy.