Solved Windows update error 80072EFD running 7 64 bit on domain only

[Jcadman]

Hi all.
I am trying to update multiple Windows 7 64 bit systems in a Domain environment and keep getting error code 80072EFD. This only happens when the PC's are connected to the Domain. I brought one of the systems home and it updated no problem so I know it is not the anti-virus(Symantec Endpoint 11.5 for 64 bit systems) or the Windows Firewall.
I have added the update sites as suggested by Microsoft to the firewall and have tried doing updates with the firewall and Endpoint disabled, no luck.
I also tried it after uninstalling Endpoint, same results.
These are new Dell PC's right out of the box, I removed the resident anti-virus programs and installed Endpoint. I have done this many times in the same Domain for XP systems without any headaches so I am pretty sure it is a Windows 7 64 bit issue.
Even though they are new systems I ran MalwareBytes on them just to make sure there was nothing hinky on them from Dell, nothing found.
Do any of you tech gurus have any ideas? Thanks in advance.

 

[NoelDP]

That sounds like it's a problem with the network, rather than the PC.
Check the network firewall settings - WU for Win7 uses a slightly different mechanism to AU/WU for XP and different ports may need to be opened for traffic.


firewall rules
You'll need both Windows Updates and BITS enabled.

 

[Jcadman]

Thanks, you were correct, it was a firewall issue.

 

[NoelDP]

Glad you got it sorted in the end
good luck.