I don't know how to update Store Beta. I checked for updates in "Downloads" session, but nothing happened please help!
It's a bit tricky, it has no response when clicking "check for update"
Try to search an installed app, say onenote, click install and back to download,
you should be able to see all apps that available for update, include store beta
It works for me!
p.s. pause the store beta update until all other apps finished, or it will restart and stop other update