''Unfortunately, Calendar Storage has stopped'' error on Sony Xperia M (C1905)

Question

I get "Unfortunately, Calendar Storage has stopped" because of which I cannot make calls or send Email from my phone. This affects my work too.

Is there a solution for this issue? I've already formatted my device because it was slow and lagging a lot.

Answer 1

First try rebooting.

Then try deleting app data from the calendar storage app (pictured below) preinstalled on your phone

If this problem persists try resetting your phone again.