Name Of The Error: Error 101
Problem: when downloading, updating or installation fails due to data crash, then this error are categorized as Error 101.
Solution:
The first and the foremost method is to delete all the data and cache regarding the Google play store.
Go to the Settings > Then click on Apps > Then All and select the app that's causing the problem, then select Clear cache and Clear data. After that Go to “Google Play Store” and Select “Clear Data & Clear Cache” to remove all the data regarding Google Play Store.
Alternative Solution: You can delete and Re add your Google Play store account.
• Go to “Settings” -> “Accounts” -> “Google” -> Select “Your Account”
• Go to “Menu” and Select “Remove Account”, and then “Add Your Account”.
• Now “Restart” your mobile device and try to perform update or download.
Vist this link to get more updated on this topic: http://www.officialtechsupport.com/google-play-store-errors-lists-fix