Chosen Solution
Why is my rca tablet saying. Unfortunately process android.process.acore has stoped
Try going into settings, storage, and clear cached data.
You can try these solutions to fix Unfortunately process android.process.acore has stopped error: Clear Cache of Application.Clear Data and Cache of Contacts related apps.Reset App Preferences.Update Android OS Click Here to find the source with more solutions in detail.
I know you might not want to but try a factory reset
Today (7-2-20) I tried the Edge browser and saw this “android.process.acore“ error code. Uninstalled Edge and the error stopped. Contacts work normally again also.
also try calender storage, had to turn mine completely off