This is a copy of the Windows sample that allows 'soft AP' support on Windows 10 through the WiFi Direct interfaces.

Passphrase must be at least 8 characters !?

Otherwise you will get a message saying "Advertisement aborted, unknown reason"

This means the driver need not have "Hosted networks supported" or "Soft AP" supported. The driver must support Wi-Fi Direct, as shown when running: netsh wlan show wirelesscapabilities

The code in this repo was taken from here: https://github.com/microsoft/Windows-classic-samples/tree/master/Samples/WiFiDirectLegacyAP opened in VS 2019 16.7 and rebuilt with recommended upgrade of the project (target runtime version was updated).

The Release page has binaries for x86 and x64 Those require the corresponding VS runtime version 14.1 (VS 2019 runtime). Runtime updates can be downloaded from the "Other Tools and Frameworks" section here: https://visualstudio.microsoft.com/downloads/ The same runtime update files are also documented and linked here: https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

Running the program gives these options:

PS D:\WebTest> .\WiFiDirectLegacyAPDemo.exe                                                                             
>?

Wi-Fi Direct Legacy AP Demo Usage:
----------------------------------
start             : Start the legacy AP to accept connections
stop              : Stop the legacy AP
ssid <ssid>       : Configure the SSID before starting the legacy AP
pass <passphrase> : Configure the passphrase before starting the legacy AP
autoaccept <0|1>  : Configure the legacy AP to accept connections (default) or prompt the user
quit|exit         : Exit

>