Perform the following:
1. Power on your PC and press and hold down the Power button when you see the Windows Logo to turn off your PC.
2. Power On you PC again and press and hold down the Power button to turn of the PC again.
3. Leave Windows to enter in Automatic Repair screen and click Advanced Options > Troubleshoot > Advanced > Startup settings.
4. At "Startup Settings" screen, press F4 (or "4") to Enable Safe Mode.
5. In Safe Mode, disable the "App Readiness' service (see Solution 3 above).
6. Restart your PC.

Yes, you can keep it disabled or set its "Startup type" to "Manual". The AppReadiness service only needed when a new user sign-in to Windows for first time or when adding new apps from Store.

Have u figured it out?

For me it worked after creating a new windows user (solution 6), however not exactly as described here. After logging onto the newly created user's account, windows said it was setting up the new user. This took a longer than it should have (windows also displayed a 'this is taking longer than expected' message), so I got up and did something else.

When I returned, the new user was setup, however I still had the same issue. Now I logged out of the newly created user, and logged back on my usual account, and it seemed to be fixed.

After restarted the computer again, I now noticed that windows gave me the usual 'lets finish your setup' prompt I get every few months. I suspect that something went wrong in displaying this message?

Anyways, it's fixed now, hope this might help someone else out there.

My boot drive was a nvme m.2 that was on a PCI card. The drive volume order was altered and it was no longer my C: drive. Windows could not find what it needed and none of the options would work for me.

In advanced repair options I selected command prompt. This brought me to an x: drive. I went to my c: drive and I saw it was not my usual c: drive.

To fix I used the command diskpart.
once in diskpart I used 'list volume' to identify where my usual c: drive was and what was currently assigned to my c: drive.

I selected the volume assigned to c with "select volume 'x'" the x being the drive listed from step one. Then I reassigned it to its proper place with "assign letter U" (u is where it should be on my system"

Then I did a "select volume 'x'" where x is the volume that should be my c: drive.
Then "assign letter C" and finally "exit"

I typed c: and it took me to the correct drive. I exited out of the command shell and I rebooted.

It took about 10 minutes to startup but it finally did bring me to a login window and i didnt have weeks of rebuilding.