L2TP VPN configuration iOS 14

App & System Services Core OS
Hatem91salameh OP
Created Sep ’20
Replies 42
Boosts 0
Views 19k
Participants 31
with the new iOS 14 update now the VPN I configure is not working it keeps showing:
"The l2TP-VPN server is did not respond. try reconnecting. if the problem continues, verify your settings and contact your admin."
but if I try on my other iphone which runs ios 13.7 it connects fine with the same exact settings.
How can I fix that
Replies  42
Boosts  0
Views  19k
Participants  31
Cutezjz OP
Sep ’20
faced the same issue, looks like a widely iOS14 bug for L2TP VPN connection.
2
barchettaplayer OP
Sep ’20
same problems with our company VPN...
iPad iOS 13.6 works fine
iPad iOS 14 "The l2TP-VPN server is did not respond. try reconnecting. if the problem continues, verify your settings and contact your admin."

same on iPhone and iOS14
2
Systems Engineer OP
Apple
Sep ’20
Can you please file a Bug Report here with a complete description of what you are seeing on iOS 14. Also, as you will most likely be asked, please include a sysdiagnose that is taken after you have reproduced he issue. Please include the following debug profiles on your device before you take the sysdiagnose:

  • CFNetwork

  • Network Diagnostics

  • VPN (Network Extension)

Please note the time and date you reproduced the issue and mention this on your bug report.
Please follow up with the Feedback ID when you have done so.


Matt Eaton
DTS Engineering, CoreOS
meaton3@apple.com
2
Frank-ME81 OP
Sep ’20
I have the same issue on iPad 2018 with IPadOS 14
2
rustter OP
Sep ’20
Same issue on iPhone SE with iOS 14
2
0dmin OP
Sep ’20
Same problems with l2tp. iPhone 7 iOS 14.
2
migaspar OP
Sep ’20
same here. VPN via L2TP is not working. iOS 14.0 (18A373) on iPhone SE (2020).
1
Hatem91salameh OP
Sep ’20
@meaton I already reported a bug on feedback assistant for this issue



1
Systems Engineer OP
Apple
Sep ’20
@Hatem91salameh Thank you. What is you Feedback ID and did you also include a sysdiagnose with the instructed information that I provided?


Matt Eaton
DTS Engineering, CoreOS
meaton3@apple.com
0
pzhang1357 OP
Sep ’20
Same issue here. L2TP does not connect on ios14 while ios13 and os x 10.13.2 works fine.
0
ParhamB OP
Sep ’20
I have same issue with iPhone 11 Pro and iOS 14, but this connection has work properly on iOS 13.7.
0
rickysuper OP
Sep ’20
Same issues with my iPad mini upgraded to PadOS 14. Any fix or settings can provide ?

Thanks
0
rustter OP
Sep ’20
@meaton I have submitted feedback with your debug profiles. Feedback ID is FB8713513.
0
Luyegang OP
Sep ’20
sha2-truncbug=yes

delete this in your ipsec config, and it worked.

I use libreswan+xl2tpd
1
rickysuper OP
Sep ’20
if remark sha2-truncbug=yes or change to sha2-truncbug=no, other devices may not be connect.
1
L2TP VPN configuration iOS 14
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