I have an HP Spectre Elite laptop with Intel HD 520 graphics. Prior to the update I was able to cast to a Miracast device. After the update I did not cast for a month and just happened to wipe the prior OS version to save space on my SSD. The Intel Graphics driver is from June 2017, the WiFi is from October 2017. The Miracast shows with HDCP support and the rest of the hardware seems to function normally. With hidden devices selected in the device manager there are none marked as having problems.
I really need this laptop to function with my Screenbeam Mini2 which incidentally has been updated to the latest firmware.
I have heard the Miracast v2 driver might work instead of the V3 (which has a 2006 date on it). I did a search and the only places listing the V2 driver were pretty sketchy and seemed to only want to install a driver search tool AKA spyware. Is there anyway to troubleshoot the Miracast handshake? I haven't come up with anything. The Actiontec guys were not helpful beyond saying yep - that's not us it's Microsoft's fault. Our device is waiting to complete the link.