Windows 10 VPN L2TP error code 809

  • Thread starter Thread starter ĽubomírIgonda
  • Start date Start date
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ĽubomírIgonda

Hello I need help.

my env: win 10 1909 build 18363.719, L2TP with preshared key

After I used CC cleaner my L2TP VPN stop working. Before was working fine and nothing changed on network or VPN server. Also on other devices works fine.
I try to kind of debug my situation and I figured out that my PC can communicate with server because I can see network communication in wireshark


wiresharK:





But the connection is not established successfully and i don't no why. I tried to set the register value AssumeUDPEncapsulationContextOnSendRule but without any change. Also turn off any Xbox network services


regedit:






VPN security setting:




event viewer:




Thank you for any advice

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