When I am trying to download and install an Android app from Google Play store, the nexus 7 just shows error 921 or -101 message. I am also not able to update any apps. Then I add another google account, but still get the same error. Try clearing cache and rebooting the device and not working. How can I get rid of it?
Here is a solution for those who have got the 921 or -101 error.
* From Home screen, touch settings and tap on Apps. Tap on Google Play Store in the lists, press "Clear Cache" and then "Clear Data" button.
* Return to Setting. Tap "Accounts & Sync". Select your account, click the three dots and choose "Remove Google Account".
* Power down your tablet and restart it again. Then re-add your Google Account.