Hi, I have a School customer which has issues with 802.1X after the Summer break. Nothing has changed on the network side as the school was closed. I see HMNG has updated a few times. They use 802.1X on Win2008 Server. Android and Apple devices can connect but no Window device can. I checked config NPS policy which uses PEAP and have unticked the less secure options. I have checked Event Logs on server and Auth Type is PEAP for both requests. The non-Windows device can authenticate but the WIndows laptop returns an error: "The certificate chain was issued by an authority that is not trusted". Any ideas for troubleshooting?