We narrowed this down to having spanning-tree portfast enabled on the ports.  Disabling portfast resolves the issue.   Portfast is enabled on all of the ports on the original 9200L, though, so it still isn't clear why it breaks 802.1x on the new 9200...

I am working with TAC on this.  It is a very strange set of circumstances.  After additional testing, I found different results with various combinations of VLANs, ethernet adapters (USB and built-in) and computers, all of which work fine with our or...

I'm having the same issue with several brand new 9200Ls that we just received.   Firmware (17.6.5) and dot1x config are identical to an existing 9200L that has been working as expected since summer.  I also tried upgrading to 17.09.04a.   Clients are...