The network administrator has prevented you from using the network

[Raju83]

Hi 

one of the Asus Chromebook user had faced "The network administrator has prevented you from using the network"

We already whitelisted his MAC-ID. Suddenly he faced that issue. We restarted device and his laptop was powerwashed.

[Mloraditch]

Perhaps the end user removed/readded the SSID and their MAC changed due to randomization.

[Raju83]

there is no random mac that us Asus chromebook laptop. checked thank you

[PhilipDAth]

What do you mean by "powerwashed"?

[PSM_NRMP]

You can (essentially) factory reset a Chromebook via a "Powerwash" procedure: https://support.google.com/chromebook/answer/183084?hl=en

[Raju83]

Issue not solved