Why couldn't I update or download any apps from the store?

[WPCentral Question]

why i could'nt update or download any apps from store?

I can not download or update in my Lumia 640 Excel. Its showing " WE SEEM TO BE EXPERIENCING TECHNICAL DIFFICULTIES. PLEASE WAIT A LITTLE WHILE, THEN TRY AGAIN. IF THE CONTINUES TRY RESTART TOUR PHONE.. THE ERROR CODE IS 805A2018..." please help me out in this...