Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
Question
Tuesday, September 22, 2015 10:47 PM
Hey Chaps,
Can anyone see what I might be missing here.
Got a handful of windows 10 computers that can no longer connect to VPN since they were upgraded from 8.1, they used to work fine.
The VPN setup is RRAS on a windows 2008 R2 Server, although i suspect that has nothing to do with the issue.
When i try a connection i get an 809 error in the application log and a could not establish a remote connection on the screen. However looking from the otherside i see no traffic on the remote firewall so i don't think its even leaving the local machine, if I ping or telnet i see the firewall traffic, (albeit rejected) so i know i can get to it.
I have tried with Windows firewall off, and Bitdefender (my AV) off and get the same issue.
Any thoughts on what else locally could be blocking/Preventing VPN traffic
All replies (5)
Wednesday, September 23, 2015 12:15 AM
see if the following KB article helps:
https://support.microsoft.com/en-us/kb/3084164
S.Sengupta, Windows Experience MVP
Wednesday, September 23, 2015 12:47 AM
https://support.microsoft.com/en-us/kb/3084164 Doesn't apply unfortunately the reg key isn't on my system and we don't have any 3rd party VPN software, all windows.
i had a little dabble with TCPVIEW and i can see traffic leaving when telnet/pinging but nothing initiating when trying the VPN.
Monday, September 28, 2015 2:26 AM
Hi,
There are only two possible reasons that some AV is blocking your VPN traffic or your RRAS server behind a NAT-T device.
Try clean boot or modify following registry entry for NAT-T device.
https://support.microsoft.com/en-us/kb/926179
Regards,
D. Wu
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact [email protected].
Monday, September 28, 2015 7:05 PM
Thanks Deason, my RRAS server is indeed NAT'd, but the registry key has been set already and the RRAS server is working fine for all clients except windows 10.
I've taken all third party AV software off the clients and I'm still not able to connect.
Any inbuilt windows 10 software that could be an issue?
Tuesday, September 29, 2015 3:08 AM
Any thoughts on what else locally could be blocking/Preventing VPN traffic
Some are having some kind of problem with Default Gateway with VPN. See if that gives a clue?
BTW I think the real caveat which was not given in that answer is that "split tunnelling" is supposedly controversial.
And then I tried:
PS>net helpmsg 809
File metadata optimization is already in progress.
WTH? I think I would be running ProcMon to find out what other diagnostics you may have to look at. Filter with Operation Is WriteFile and then use Tools, Count Occurrences... on the Path field.
HTH
Robert Aldwinckle