Hello,
Maybe this could help, please have a look there: https://forums.adobe.com/thread/1068125?start=0&tstart=0
and
http://social.technet.microsoft.com/Forums/exchange/en-US/f290d33a-f492-4546-b020-9fcd3621 7225/forbidden-by-system-policy?forum=exchangesvrdeploylegacy
One answer there was:
1.Click Start -> Control Panel
2.Open Administrative Tools
3.Open Local Security Settings
4.Click Software Restriction Policies 1.If no software restrictions are defined, right click the Software Restriction Policies node and select New Software Restriction Policy
5.Double click Enforcement
6.Select "All users except local administrators"
7.Click OK
8.Reboot the machine
... and on the other hand you could use forum's "Search Communities" to get a better hint.
Hans-Günter