If you upgraded recently Windows keeps files that allow it to downgrade to the old version, you can check by going to Disk Clean-up then select the UAC protecte

If you upgraded recently Windows keeps files that allow it to downgrade to the old version, you can check by going to Disk Clean-up then select the UAC protected option in there and it might have some upgrade files you can delete. Aside from that I think you just have to give it some time.