Killer Wireless 1550 (9269NGW) preventing gmail from loading

Hi, 

Can you please explain what you mean by "shutting down the Wi-fi drivers"? Are you disabling them in Device Manager or reinstalling them? Can you confirm if this problem also happens when using the LAN connection?

"Shutting down wifi drivers":
by this I mean I Open task manager, finding entities labeled "Killer..." and force closing them. Usually 2 entries.

This gmail blocking phenomenon occurs on different wifi networks (not limited to one in particular).
I do not routinely use a LAN connection, but I could try it and let you know.

I disconnected from wifi and connected to internet w cat 5 wire to router. Turned on Killer network services and killer control center app. It blocked gmail. Closed the service and app, problem resolved instantly.

Hi, 

Just to confirm, are you saying that doing this fixes the problem with both the Lan and WiFi drivers? 

I just wanted to chime in here. I have been having tremendous issues with my Killer Wireless AC-1550 as well.  Accessing sites like twitch.tv, gmail, lowes.com, and even issues on facebook.  Today I disabled my wireless as a test and plugged in to my router with CAT5 and the issues disappeared. 

I then found this forum and disabled the Killer appliactions like OP mentioned and now all the sites run great on my wireless.  I don't think i was having this issue before the wireless driver update as these sites worked just fine when i bought the laptop in February.

Thanks for confirming that.

With all killer services and apps off, I have no problem w gmail, on wifi or lan. With either wifi or Lan (cat 5 wire to router), if I turn on Killer network services and/or killer control center app, I then loose access to gmail. If I then close the killer service and/or app, the problem resolves instantly (I am able to get gmail), proving the killer network service and/or the the killer control center is/are the culprit(s).

I'm having the exact same problem.  What app do I need to disable?  I close the Killer Control Center still can't access gmail.com.

Forgot to mention that if I start my VPN (ProXPN) first, then I can get on gmail.

For those having issues with Killer network devices just open the Killer Control Center, go to settings and turn off "Advanced Stream Detect". 

@enun_77 thanks this seems to have worked. 

If I didn't disable the Killer WiFi in Device Manager before running Kill Control Center I would get a MS .NET Framework Unhandled exception has occurred in your application and I couldn't get in.

ive been having similar issues. I think the problem is with when websites open SSL/TLS connections it just simply hangs and times-out. Ive done several reinstallations of windows, drivers with and without killer control center. It might be the module itself thats faulty. Anyone hear these kinds of problems?

connecting with a wire, everything works fine. So its not a software issue it seems