I was working on an issue with a client who was not able to connect to an Azure VPN. He was getting the following error message:
After doing some extensive research, I found out that TLS 1.2 needs to be enabled on the workstation for it be able to connect.
In order to fix this issue, you will need to add the following registry keys:
reg add HKLMSYSTEMCurrentControlSetServicesRasManPPPEAP13 /v TlsVersion /t REG_DWORD /d 0xfc0
reg add “HKLMSOFTWAREMicrosoftWindowsCurrentVersionInternet SettingsWinHttp” /v DefaultSecureProtocols /t REG_DWORD /d 0xaa0 if %PROCESSOR_ARCHITECTURE% EQU AMD64
reg add “HKLMSOFTWAREWow6432NodeMicrosoftWindowsCurrentVersionInternet SettingsWinHttp” /v DefaultSecureProtocols /t REG_DWORD /d 0xaa0
You will also need to install the following patches:
Then you will need to reboot the PC and you should be able to connect to the VPN.