Please help i am facing this problem in windows 10

The start menu is filled with apps showing download sign........it says A GREAT APP IS COMING.........WHENEVER I replace another app in start menu.....the cursor revolvles and start menu shuts........after I click the start menu again the replaced app is removed and again filled with download sign apps........Though I unpin them......they again come back after the start menu crash........Plz help.....TIA

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