Solved
[CURRENT ISSUE] The Sims 3 - Disc Authorisation/No Disc Errors
"Disc Authorization Failure – no game disc found! Please insert The Sims 3 disc before proceeding"
"Disc Authorization Failure – we are unable to verify that your disc is a valid copy of The Sims ...
Uninstall your most recent EP then download and reinstall the digital version from Origin. Instructions here.
