802.1x authentication failed on Windows 11


For windows11, the 802.1x authentication is enabled on the network adapter and peap-mschapv2 authentication is selected. However, the identity verification fails. When the Wireshark is used to analyze captured packets, the following information is displayed:

TLSv1.2 Record Layer: Alert (Level: Fatal, Description: Access Denied)


This problem did not occur on other operating system versions, such as windows10

3 Replies

Disabling TCP and UDP checksum offloading for both ipv4 and ipv6 kind of fixed it for me. I'm at least getting internet. 

The "fix" was a shoot in the dark based on experience I've had with a bug in newer versions of windows 10: Unable to send UDP packets larger than the MTU with Windows Build 1809 using C# UdpClient (microsoft...

Had this too with 802.1x and AlwaysOn VPN. The reason is documented here https://directaccess.richardhicks.com/2021/09/23/always-on-vpn-error-853-on-windows-11/
How does it work? I'm having the same problem and can't access the enterprise network with Windows 11