I'm still having an issue with Jigsaw

Are you still experiencing this issue? Have you made sure that you are on the latest version of Jigsaw (1.2.1412.1508)?

I am having the same issue with jigsaw. Uninstalled and reinstalled the game but I am still having the same problem

I lost Jigsaw Jam collections 2 and 3 as well.

After uninstalling/reinstalling Jigsaw, I've now also lost the stats for Jigsaw Jam collections 2 and 3.

Oh well, at least I still have all the Jigsaw Jam Achievements.

In the plus column, my Daily Challenges sounds (the "Coin Drop" and so-forth) now work correctly. This is a problem I've seen come and go with other games (such as Minesweeper and Solitaire) on Windows 8.1. I never had those problems with Windows 8.0,
and this was a big reason I delayed upgrading to Windows 8.1 for nearly half a year. The mid-September updates fixed the problem in Minesweeper and Solitaire, and the just-released update for Jigsaw fixed it for Jigsaw.

Also, despite some of the underlying stats still being wrong, I'm now getting proper credit for completed collections in Classic Jigsaw. The stats still say, for example, that I've played 10 and completed 8 Expert puzzles (I actually completed all 10) but
now I'm being given credit for completing the collection in Expert difficulty.

Having the same issue with mine -- had to stop in the middle of a classic jigsaw and shut down the computer -- when I reopened 8 hours later, Jigsaw will not load. Same issue that you stated.

All other Microsoft games work -- just Jigsaw that is hung up

I'm sorry to hear that you lost interest in Jigsaw due to this issue. I will make sure to pass your feedback on.