Mike Evet

Solution!
After further investigation, the only solution to this issue in my case (without extreme measures) was to wait for an update higher than the beta version. When the store will detect that a newer version must be installed, it will disregard the cache files and install the proper program data for the corresponsing version. The store does not seem to recognise downgrading to a previous public version when unenrolling from the Insider Program. However, since the store does not seem to understand this behaviour, the store will bug out and show that it is still installing minecraft, even if minecraft has been installed (As seen in the image below)

My minecraft is now working as expected and hopefully, I won't be getting any more insider builds 🙂

Hope someone found this useful.

I tried uninstalling Minecraft and clearing the cache of the store, however the store did not seem to fix itself nor sync with the store server. I am now unable to install Minecraft at all. Attempting to install Minecraft will throw an error in the store. I’ve tried searching the error code online and it all leads to Groove Music related stuff. I don’t think this is an issue with the store server at all. The “Ready to Install” feature should be removed at once or revamped to actually support beta apps that are part or the Ready to Install library. The store assumes that the program data is still on the pc when in fact it is not.

Edit:
I even deleted cache from the registry that is tied up with 3rd party store apps and still had no luck (this was before I couldn’t install Minecraft) I think the ONLY solution is to get a clean install of Windows since the cached program data is so sensitive, it can’t be touched by anyone. If anyone wants to have a look at what I’m talking about, you can find all store apps’s program data in Program Files -> Windows Apps. The folder is heavily guarded with security permissions and requires admin privileges, don’t modify ANYTHING unless you know what you’re doing.

I'm having the same issue at the moment. I believe this is caused by the Microsoft Store's "Ready to Install" feature. You can find the apps associated if you navigate to the ... Menu -> My Library -> Ready to Install. You will see a list of apps that are cached on your PC, hence the name "Ready to Install" and attempting to remove the cached data will cause errors with the store (you will be unable to install the app unless you restore the cached data). Due to this behaviour, the store is unable to install a clean version of Minecraft Windows 10 Edition because your system does not get rid of the beta files, all what the store does is install the app without the program data. There is clearly no coordination with the Store App and the Insider Hub App if this is actually the case.