Terminal Server 2012 R2 - Time Zone redirection issue

Hi guys

I have a thin client that connects to a Terminal Server 2012 R2 farm and since Turkey has scrapped the DST change, the users complain the time shown within the session is wrong.

I can see that Microsoft has released a patch (https://support.microsoft.com/en-us/kb/3192321) for this problem, but I'm unsure...should this patch be installed on the thin client or on the terminal servers (or both ?) ?

The Terminal servers are configured to allow the redirection of the time zone. This was done because our terminal servers are serving multiple time zones.

Thanks!