cubs, same thing happened to me about 2 days ago. Windows 10 recently put out an update that made Windows Defender make ezdok crash when running P3D.
To fix the problem, run Windows Defender and then click on the settings gear icon. Under "Exclusions" click on Add an exclusion.
Click on "Exclude a folder" and then choose your ezdok folder location. By default it should be C:\Program Files (x86)\EZCA
That should do it. EZDOK should be back up and running.