Hi again @Kevin_Z the router is the EU version. Attached is the screen shot with the error message. I don't see any related messages in the system log.

Thanks @Kevin_Z is the beta firmware suitable for the 2300 V2 version? Currently I am running the firmware version below: Edit: Regardless the firmware upgrade fails on the C2300 V2.0 version.

@miro_miro I have the same issue here, C2300 reboots either on 2.4 or 5ghz wifi whenever I try to connect to my work vpn. The vpn is just using a standard MACOS vpn. H/W Version: Archer C2300 v2.0...