Can't install updates, or from the store (0x80073cf0)

Hi! Recently I tried installing an app from the store (didn't use it before), I got an "0x80073cf0" for which no useful solutions exist on the net. After I tried updating windows. I'm on un-updated 8.1. This doesn't work either. I got "Failure configuring Windows updates. Reverting changes. Do not turn off your computer". Restoring the system lasted for hours... The two might be...