Hi, Microsoft has an app to control an Arduino via the StardardFirmata sketch, but Boards.h in the Firmata library needs updating to work with the Arduino 101. I modified Boards.h by copying the "Intel Edison" entry and changing the board definition. StandardFirmata compiled and uploaded successfully with this change and the app works. I can provide more details if interested.
app link: https://www.microsoft.com/en-us/store/apps/windows-remote-arduino-experience/9nblggh2041m