jasonkennedy , everyone else, please accept our apologies for this issue, which seems is specific to this version of the app (.76) and Windows 1703 (RS2).
We are working as quickly as possible to fully identify and mitigate the issue.
In the meantime we have halted Store updates. We will also make the previous version (.64) available in the store (although this will take a couple of hours). We are pulling app version .76 from the store, and will republish a version .77 asap which will require Windows 1709 (RS3) at a minimum. We will then publish a version .78 with support for Windows 1703 (RS2) as soon as we have an identified fix.
Please note that we do expect that future releases (beyond .78) of our MTR app will require Windows 1709 (RS3) as a minimum. Our goal on an ongoing basis is to support Windows versions going back one year (from the date we support a given version for MTR). We will provide more information on this in a future post to this community.
If you have MTR devices which have hit this issue your current mitigation options, until we can release a fix, are:
1. Roll back to the .64 app version (using a restore image from Logitech or other vendors or from the store once .64 available there in a couple of hours) or
2. Update Windows to 1709 (RS3) or 1803 (RS4) which are both supported (note Windows 1809, RS5, is not yet supported for MTR).
Aside from the above, you can also wait for an updated version of the app with a fix to support Windows 1703, which we will release as soon as we have the fix completed and fully validated.
Again we sincerely apologize for this issue.