How to fix error code 101 on Google Play Store (Nothing else worked)

It is possible that the latest version of the Google Play Store app caused the error 101. It may have been improperly downloading (e.g. it was being downloaded when a background system process got stuck), or your Internet connection was unstable at the time you were downloading it. The best solution in this case, is to revert the Google Play Store app to the default version, by following the steps below:

1. Go to Settings and tap on Application Manager/Apps;
2. Tap on Google Play Store, and select Uninstall updates;
   

   
   
   

3. Tap on OK to confirm; 
4. Open the Google Play Store app.
   
   

The video guide below shares how to uninstall updates (taken on a Samsung Galaxy device, running on Android OS 8 - steps may slightly vary from one device to another):



Note: Before updating the Google Play Store app, ensure that you are connected to a stable Internet connection, preferably a Wi-Fi one, to prevent errors.

If the other solutions didn't work, consider resetting your device to its factory settings. This course of action will remove all the corrupt system files from your device, and replace them with clean files.

To reset your device to its factory settings, feel free to follow the steps below:

1. Backup your device's data to any cloud storage service (e.g. to Google Drive);
2. Go to Settings, tap on Reset and tap on the factory-reset option
   
   

Feel free to watch the tutorial below, on how to reset your device (taken on a Samsung Galaxy device, running on Android 8 - the steps described may vary from one device to another):

Note: Make sure that your device is fully charged before resetting it to the factory settings, to avoid additional complications. Also, make a backup of your personal files (photos, videos, music, and other documents).