An anonymous reader shares a report: While Microsoft ended mainstream support for Windows Phone 8.1 more than six months ago, there are some users that still utilize the platform as their daily driver. Although the company's overall mobile initiative isn't faring too well either, most users on older platforms are still there because they prefer it over the competition or weren't offered an upgrade path to Windows 10 Mobile. However, it now appears that Windows Phone 8.1 users are facing some unforeseen problems with the Store - and no, it isn't regarding the dearth of apps. According to reports, people on the platform have been unable to download apps from the Store since yesterday. Hundreds of people over in Windows phone Facebook groups, Reddit, and Microsoft support forums are complaining that they are being hit with error code 80070020 when attempting to download apps from the Store using their Windows Phone 8.1 devices. We have confirmed the presence of the issue on our devices too.