Just fixed this problem for a friend, and the WSReset is what finally fixed it. Friend always plays as Guest, no xbox or store account. Also doesn't sign in using an admin account for what it's worth. Computer is a fairly old AMD A4 APU that is real sluggish in Windows 10 for no reason every now and then.
Here's what I did in order, in case it helps someone:
- Checked for updates - none.
- Uninstalled and resinstalled Solitaire.
- Checked for updates - none.
- Reset Solitaire from the advanced uninstall options.
- WSRESET from command prompt, as user.
- Looked for those ARK files while waiting, didn't see any.
- Checked for updates - Got an update for STORE itself.
- Ran Solitaire, and it finally worked.