Windows 8 stopped syncing

Hello,

I've found a little issue i would like to solve :)

i have 2 windows 8 Pc's here,
1 laptop, and 1 desktop
the desktop is currently behind the UTM, while my laptop is bypassing it(to test some stuff)

1 of the things is, that windows 8 syncs a lot of stuff between accounts.. those PC's both should sync my passwords and personalization, which doesn't happen..
I changed my lockscreen a week ago(on my laptop, on a different network), but my desktop doesn't update.

I found out the firewall is blocking things(currently onliest module that's active):
my pc's open a connection to a Microsoft-IP,
this replies via a DIFFERENT IP, which gets rejected by my UTM, because it's not the same outgoing connection opened by a client.
is there any way to solve this?

it are all adresses in the 64.4.0.0/18, 157.56.0.0/14(hotmail/live), 65.55.192.0/18 and some other ranges.. but to check all those thousands to see if it are legitimate Microsoft-adresses, is a lot of work ;)

blocked incoming connection(dstip is the external interface):
my log shows like 15 of those rules, all from the 157.56.0.0/14 subnet as before( and google told me it are all Microsoft-addresses)