Is there any way to find out , when the user had updated his profile last time

Question

I want to know the date and time , when user had last updated his profile

Answer 1

In SharePoint On-Premises, we can get recent user profile changes using the Change Log.

UserProfileChangeCollection changes=profileManager.GetUserProfile("domainname\\username").GetChanges(changeQuery);

Refer to: How to: Get Recent User Profile Changes Using the Change Log

Unfortunately, there is not an API to achieve it for SharePoint Online currently.

Official document: UserProfile members