Join the Conversation

To sign in, use your existing MySonicWall account. To create a free MySonicWall account click "Register".


Connect Tunnel | A Network Adapter Hardware Error Occurred Issue

th3satyath3satya Newbie ✭
edited March 2022 in VPN Client


While trying to connect to the VPN using SonicWALL Connect Tunnel VPN client version, it's failing with the following error " A network adapter hardware error occurred".

I have tried all the possible solutions, still not able to resolve this issue.

Please help me out to resolve this issue.

Please find the below screenshot and log file for reference.

Category: VPN Client

Best Answer

  • Options
    vkrtandravkrtandra SonicWall Employee
    Answer ✓

    This is a known issue when the client machine has other legacy VPN clients that use DNE. DNE installs legacy filter on all existing adapters, causing Windows adapter configuration API to fail thus leading to CT error.

    The fix is to disable DNE or uninstall other VPN clients that use DNE.


Sign In or Register to comment.