What software can break the connection by timeout on Win7?

Question

Windows

The client does not run a long PHP script on the local machine. The browser says "no data received".
Everything works fine for me.
What software on Win7 can break the connection by timeout?

Answer 1

Oh, a telepath on vacation, to see the list of installed on the PC and the list of services, then you might think, but it’s so stupid to guess)

Answer 2

well, at least some ideas what it could be besides antiviral....

Answer 3

VPN client