ERR_CONNECTION_RESET on some sites

Answer (for my case): Disable all "Killer" services. The adapter I am using is older, but the software that auto-installed with the driver, caused the problem.

Adapter in my case: Killer E2400 by Rivet Technologies.

Wordy explanation:

I wired my computer with Ethernet last summer. (2023). My Wi-FI adapter was not performing well, so I took the time to string cables.

That resulted in great download speed (almost 1 GB per second), but terrible upload speed. So bad that the machine was barely functional.

"KIller" technology was designed to offload activity from WIndows, into the adapter processor to improve performance. But it's older technology now, and the age of my particular adapter compounded the problem.

That was resolved by uninstalling all Killer app software, and disabling the "offload" settings in the advanced driver configuration. Now it's speed is great in both directions.

The connection-reset errors began after that, but only with SOME sites, so I did not notice it right away. I suspect it's in places that use some form of location detection, but that is not confirmed.

Even though I had removed everything named "killer", I discovered this week (April 2024) that there were still four services running named "Killer ...".

I disabled all of them, restarted. All my "bad" sites have been working for 2 weeks now. Since then I've deleted the services and it is still working.

Same problem, IPV6 is not supported by Microsoft?

Hi,

I've fixed it by disabling IPv6. No idea why it works though.

Hi, I'm Elise, a fellow user like yourself and I'd be happy to help with your issue.

Do you have any antivirus, internet security or VPN software installed as often this can cause this type of issue. If so could you try disable and see if this resolves the issue.

Please let me know if you need any further assistance.

Kind Regards,

Elise