Android.process.acore>Factory reset>why are my apps crashing?

[Android Central Question]

Okay, so a few months ago I started getting the error message "android.process.acore". I eventually ended up clearing my contacts list as I'd read online but then my tablet seemed to act worse and apps were not working properly. I then reluctantly did a factory reset. Now, Google Play isn't working and apps are constantly trying to update but then crash when opened or won't install at all. Many apps say not compatible with my device, Chrome is out of date all of a sudden and won't update, webview won't update... I have no idea what to do with all this...

 

[B. Diddy]

Welcome to Android Central! Which device? If it's running a really old Android version, it might be due to loss of support for that version.