It won't be fixed by apple update!! i Use iOS 14.2 beta instead. Problem not solved.
We have to change Server Site!
This helpful answer for Sophos Users fixed our Problem for now.
:
i have an sophos UTM with L2TP over IPsec VPN and IOS 14.0.1 (IPhone se2020)
so i change the IPsec Policy in "Remote Access -> IPsec -> L2TP-over-IPsec (Policy used for L2TP-over-IPsec)"-> IPsec encryption algorithm: 3DES
-> IPsec authentication algorithm: SHA2 256
Restart the L2TP over IPsec VPN with the switch and
now it works
Posted 1 week ago by spin_tb
barchettaplayer
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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