I just bought a license of Avast Premier but is giving me many problems that I did not have when i used avast free in Windows 10, for example Windows Explorer crash every time or smoe programs like autocad dont run after i open it. The only solution I could think was uninstall it and return to avast free and it fix everything. What happened? I bought Avast Premier for solve problem not to give me more. Help me please. Sorry for the mistakes but English is not my mother language.