Question All downloads fail regardless of browser, despite good network speeds after fresh Windows install ?

[Sporkel]

Hi all,
I recently had to wipe everything clean as one of my HDDs died, and my copy of windows went with it (couldn't boot, assuming it put my EFI partition on the HDD rather than my SSD as I had to remove all drives but my SSD to reinstall properly). Upon booting back into Windows 10 easily, everything I download, regardless of browser, fails. The download will start and after anywhere between half a second to a few seconds, it comes to a screeching halt and never resumes, eventually resulting in "download failed: network error". Youtube and really any other streaming service auto-defaults to the lowest possible quality, and trying to load a 1080p video buffers horrendously every few seconds. Signing into Nvidia geforce experience is near impossible, as for example, when signing in using discord, it fails to send a confirmation email every time and gives an error. This was never an issue prior to reinstall.

-My specs:
Gigabyte Z390 Aorus Elite
Intel Core i7-9700k
32gb TridentZ 3600MHz CL18
Zotac RTX 3070 Twin Edge OC LHR
EVGA SuperNOVA 850 G+
Crucial MX500 500gb
WD Blue 1TB
Running Windows 10 Pro 22H2

I have already tried numerous solutions users on other forums have responded with, such as flushing my dns, changing my dns entirely, starting WWAN and WLAN services, a plethora of ipconfig & netsh commands, reinstalling windows fresh again, resetting my CMOS, countless driver installations, deleting my network adapter in device manager & restarting, etc.

I tried installing the Intel ethernet adapter complete driver pack 27.8, which didn't work after searching exclusively for i219-v. At this point, I am convinced that it can't be a driver issue, since I built a small test bench using spare parts to test whether it was my network, and everything worked flawlessly without changing a single thing. I am running gigabit over ethernet and used the same cable for both systems. Running a speedtest appears 100% normal and shows expected speeds.

Is there any potential fix to this out there, or am I out of luck and have to drop $200 on another board? Everything else on it works fine, but I'm worried that something somehow broke when it comes to networking as my old h110 has zero issues.

Any help whatsoever is greatly appreciated.

 

[Ralston18]

Make and model information for modem and router. Or modem/router if combined.

The router's logs, if available and enabled, may provide some clue. Who has full admin rights to the router?

You will need help from that person.

Try disabling IPv6 on your computer.

Failing that, run "ipconfig /all" and post the results.

 

[Sporkel]

Make and model information for modem and router. Or modem/router if combined.

The router's logs, if available and enabled, may provide some clue. Who has full admin rights to the router?

You will need help from that person.

Try disabling IPv6 on your computer.

Failing that, run "ipconfig /all" and post the results.

Just disabled ipv6 and everything seems to be working again, you're a godsend. Will update if anything changes. Just for curiosity, what's the reason this even worked in the first place? Were they somehow interfering with each other?

 

[bill001g]

It is a common recommendation because like your case it almost magically fixes all kinds of strange issues.

You can almost think of IPv6 as a completely different internet connection. It can follow a very different path between ISP and routers going to the destination servers.
It seems the IPv4 network many times has better performance that then IPv6.

I am not sure why it many times function worse. For more than 20 years they have been saying it is the future of the internet. For whatever reason some ISP do not make it function well.
It may also be related to all the cloud based hosting sites like cloudflare,google, amazon etc etc. These sites "virtualize" the web servers you are using so that they appear to be in multiple different data centers at the same time.

In any case the reason IPv6 came about was the shortage of IPv4 IP addresses. They now use stuff like NAT and fewer companies run their own data hosting centers so this issue is much less.

Pretty much it seem IPv6 just causes trouble for people so turning it off is recommended in general. There are a very small number of web sites mostly in asia that only use IPv6, but there are tricks like using special proxy servers that allow reaching these using just IPv4.