I have a computer restriction policy defined to certain computers in an OU. This policy has been working for months. This policy is marked enforced. The policy restricts these computers from using Internet Explorer (path rule C:\Program Files\Internet Explorer\IEXPLORE.EXE). This week, the policy stopped working. All of the computers in the OU can now use Internet Explorer. I have verified that the policy has not changed and nothing on these computers looks any different (33 computers).
I deleted the current policy and recreated it; however this had no effect.