When this problem happens, I have same proxy enabled for all protocols.
After i turn off selection ‘use same proxy server for all protocols’ from IE6 proxy setting then https pages starts working

I also try Firefox ant it have same problem ( so problem is in Avast)
My ISP proxy server uses port 80

I just try to enable proxies for all other protocols than secure (SSL) and it seems work fine.

Problems comes only when i use proxy for SSL protocol.
If i enable SSL proxy and stop browser protection module from avast I can use https pages.

-OneOfUs-