Microsoft has brought the official diagnostic suite for its Surface devices to the Windows Store, making it available to its new Surface Laptop, which it launched last month. The new notebook ships with Windows 10 S, a version of the OS that is only able to run apps downloaded from the Windows Store.
Until now, the app was available to download for other Surface devices from Microsoft.com, but its absence from the Store made it impossible for Surface Laptop users to install it on their machines, unless they had ditched Windows 10 S and made the switch to Windows 10 Pro.
As its name suggests, the app offers diagnostic and troubleshooting tools to help users with issues that might pop up on their Surface devices. Its Store description explains:
Part educator, part detective, and part doctor, the Surface Diagnostic Toolkit guides you through a set of software repairs and hardware diagnostics to quickly and efficiently uncover and resolve issues you are experiencing on your device. Use this app to check your battery health, lookup information about your device, repair common software issues, and validate your Surface hardware. The Surface Diagnostic Toolkit is the best place to start troubleshooting, and will guide you to the best support avenue for the quickest resolution, so you can get back to turning ideas into actions and accomplishing more with your Surface.
Oddly, it appears that the Windows Store version of the app is only available for the Surface Laptop; it does not seem to be possible to download it from the Store to other devices. Microsoft's updated support notes indicate that it wants Windows 10 S users to get the app from the Store, while Surface owners running other versions of the OS are directed to install SoftwareRepairTool.exe from its Surface support site.
You can see a few screenshots from the app in the gallery below.