Nach Web recherche gefunden - hat bei mir geholfen.
Bei mir, wer weiß warum, hatte ich nicht mehr meinen Local account, sondern den Remote. Ich habe das nur bemerkt, weil ich plötzlich mein altes Anmeldepasswort wieder hatte.
" Try this. Right click Start. Click Run and type services.msc. Scroll down the list until you reach Windows Update. Make sure it is set to Automatic or Automatic (Delayed Start). If necessary, double click, Start the service and change to Automatic. There is a correlation between Windows Update and the Windows Store that I read about on another thread. You may need to reboot after trying this before returning to the Windows Store. It seems to have worked for me when other options failed. Hope this helps!! "
viel Glück
Gunter