I had my viva in July and got minor changes. My supervisor is not happy with my changes and says that there is the possibility that my examinors will not pass me. Can it be the case?
If you do not make the changes required by the examiners they can fail you or award you an MPhil. This will be up to them, not your supervisor. As it is likely that your supervisor is on your side, it would probably be wise to take his advice.