Bitcoin was the future of payment system and added it as a payment option for Windows store at the end of 2014. Microsoft struck a deal with third-party bitcoin payment processor ‘Bitpay’ that allowed people to use Bitcoin to purchase Microsoft’s products and services from Windows Stores. Microsoft quietly updated the Windows Store FAQ that popped up “Microsoft Store doesn’t accept Bitcoin” Microsoft’s change of mind could be due to less number of people buying with virtual cash that gave the company no reason to continue keeping Bitcoin as a supported digital currency.
Source: https://thehackernews.com/2016/03/microsoft-windows-store.html