I saw this issue randomly on Windows PCs due to IPV6 TCP checksum offloading.

Try the following on the problem Windows machine:

- Open the Device Manager -> Network Adapters -> Network Interface (Ethernet NIC):

- Under the Network Adapter -> Advanced Tab, disable these options if present:

TCP Checksum Offloading (IPV6) -> Disabled

UDP Checksum Offloading (IPV6) -> Disabled

- Try Windows update again

Clinton Work

Airdrie, AB

On Sun, Nov 11, 2018, at 2:29 AM, Mark Tinka wrote:

Hi all.

Anyone ever figured out why Windows updates fail when the computer has an IPv6 connection?

Google has tickets and tickets of this to and outside of Microsoft since 2013, with no real solution or answer as to what the problem actually is. In essence, many of the solutions out there point toward making sure the updates do not occur over IPv6, which, in effect, is the same as disabling it.

I have a family PC at home running Windows 10 Pro, and noticed updates would fail in recent months. It took me a moment to realize that this started happening only after I enabled IPv6 in the TCP/IP stack. Disabling it immediately solves the issue.

Quite odd that this is happening in 2018...

Mark.