Google Play Store Error Code 491

Problem

Downloads and updates impossible

Solution

Remove your Google account by going to the settings
for your device, then accounts and Google. Hit
remove account. Reboot your Android and add the
account once again. Next, in the settings, go to Apps
(Applications) and swipe to find ‘All’ of your
apps. Scroll down to Google Services, then click clear data and finally force stop.



You have probably guessed by now that there is a
standard way of alleviating some of these errors
and if there is a problem other than those mentioned
above, you could try following the same steps.
Always be careful when wiping your data or doing a
factory/data reset, this will get rid of your saved pics, files, contacts etc, so make sure you backup all
your data beforehand. Before resorting to a factory reset, make sure you
try all other solutions first. You also need to back up
your data beforehand.

My Google play store doesn't just open, I've cleared cache, cleared data, forced stop... Nothing worked... But on WiFi it opens... What could be the problem?