Why is Play Store showing "Can't install app...Error Code: 910"? I am using Android Lollipop mobile. I have uninstalled preinstalled Youtube app updates. Now I tried to update the app from Play Store. It is giving the error "Can't install app" with error code 910.

I have tried the following steps:


Deleted Play Store app's cache and data.
Deleted Download manager app's cache and data
Deleted Youtube app's cache and data.
Restarted phone.


And tried again, still same error occurred. 
How do I fix this?
I had been getting error 910 for days. I finally managed to solve the problem using the following steps:

I "ejected" the SD card via settings, device, storage. I didn’t physically need to remove the card from the phone.

(Android 6.0.1..... Blackberry Priv.)