How to fix 'Device limit reached' errors in the Windows 10 Store
You may have bought yourself a new computer with Windows 10 pre-installed, or you may have manually upgraded your older machines. Whatever route you have taken to Windows 10, the chances are that you will end up in the Store at some point in order to download apps.
We've already looked at what you can do fix the 0x803F7003 error that can plague the Store, but this is not the only issue that can arise. When you try to install an app you may see an error message that reads Device limit reached. Not a problem -- here's what to do.
There are two possible causes for this error. The first is that you genuinely have exceeded the number of devices on which you can install apps. Considering the fact that Windows 10 is free, there's no reason not to install it on every computer you own and it is at this point that you may encounter Windows 10's 10-computer limit -- down from 81 in Windows 8.1. The error message itself is quite helpful:
It looks like you've reached your device limit for installing apps and games from the Store on your Windows 10 device. If you want to install apps and games from the Store on another Windows 10 device, remove a device from the device list.
Start by paying a visit to the device management page at https://account.microsoft.com/devices and remove any devices you are no longer using.
If this does not work -- or you see the error message even though you have nowhere near 10 devices -- you can try the same fix as for error 0x803F7003. Resetting the Store cache should help to resolve the problem.
Hit the Start button (or press the Windows key) and type wsreset. When the command is displayed at the top of the Start menu, right click it and select Run as administrator. You'll probably find that a User Account Control dialog appears and you just need to click Yes here to continue. You should find that you can now download apps.