I have free Ad-Aware as an auxiliary backup to AVG free version. I am no longer able to open the Ad-Aware program. The warning message reads: Ad-Aware Antivirus\11.7.485.8398 - Windows cannot open this file because it has been prevented by a software restriction policy. I have checked and there is no software restriction policy in place. So I am assuming this is a malware or trojan infection. I deleted and reinstalled Ad-Aware, which ran a virus check after installation, which had no results. However, i still cannot open the software, even after re-installing, from my desktop icon or Programs list. I am running Windows XP on the affected pc. The software works fine on my other computers, one running Windows 10 and the other Windows XP.