Cannot connect to the Azure VPN Client: Server did not respond properly to VPN Control Packets. Session State: Reset sent

Question

Since today I cannot connect to the Azure VPN Client of our client. If I try, I get the following error message:

"Server did not respond properly to VPN Control Packets. Session State: Reset sent"

Next, I looked into the logs and found the following errors:

• [Error] SId:[Primary] Couldn't load packet length bytes.
• [Error] SId:[Primary] ReadInitPackets Failed: 1
• [Error] SId:[Primary] Failed to establish OpenVPN connection: Server did not respond properly to VPN Control Packets. Session State: Opnieuw instellen verzonden

I tried to look up some suggestions on how to fix it. The local time of my laptop should already be in sync with the Azure VPN Client, this hasn't changed since yesterday.

Answer 1

@Masic, Ajdin

Thank you for reaching out.

I understand you are facing issue while connecting to Azure VPN using the Azure VPN Client and you getting the following error message.

"Server did not respond properly to VPN Control Packets. Session State: Reset sent"

I went through some similar issues internally and below are some steps you can follow to help resolve this issue.

• Delete and reinstall the Azure VPN Client. You can also try re-generating the VPN client profile configuration file and import it again.
• Perform a packet capture on the VPN Gateway and on the client machine and see if you are able to view any in-complete packets or issues.

If this does not help, a support request will be required to further investigate the issue. If you have support plan you may file the support request, else please refer to my private message here.

Hope this helps! Please let me know if you have any questions. Thank you!

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