I was facing same problem, and now I found a answer, go to setting, apps, all.
Then select Download Manager.. I believe it's disabled so make it enable.. this happened when u received an update for gmail or Google and you ignored the update. After you click to enable it, directly it will start to download the update for gmail and anyother program for google.after downloading everything will be back to normal like nothing happened. It works for me
Then select Download Manager.. I believe it's disabled so make it enable.. this happened when u received an update for gmail or Google and you ignored the update. After you click to enable it, directly it will start to download the update for gmail and anyother program for google.after downloading everything will be back to normal like nothing happened. It works for me