google play: error retrieving info from server [RPC:S-5:AEC-0]

[Mike Lang1]

hi all,
My galaxy S2 was working fine. I used google play a couple of days ago without any problem and today when I tried to update my app systemPanel from google play (or any other app), I got the error:

Update for 'systemPanel app/Task Manager' could not be downloaded due to
an error. (error retrieving info from server [RPC:S-5:AEC-0])

what exactly does it mean? I googled it and tried the clear data/cache of google play/google frame and it did not help.
I have also deleted then added back my gmail account and it did not help.

I couldn't install any app either. I got the same error when I tried to install any app from Google play store.

I'd appreciate any help you can give.
Thank you.

 

[Mike Lang1]

Found a google support phone for the Google Play Store and talk to a support person. Google must hire the minimum wage workers to work the phones. She basically just acknowledged that yes, there was a problem. No, we don't have a fix. Sorry. That was it. It was a waste of time even to talk to them.