Unable to open Panel of Avast Server Managed

Hello, from some week I have problem with most server that have ADNM installed and Avast Server Installed on itself, all server have Windows Server 2003 R2.

When I open Avast Server Edition (managed) from start menù, it scan memory and after disappear and I haven’t the possibility to manage it, I think that are some update of Microsoft Update that cause the problem, what? And why?

Best regards