Microsoft to Block Third-Party App Access to User Sites and Files
In July, Microsoft plans to introduce an app consent policy to stop users granting access to third-party apps to their files and sites. Letting users grant unsupervised consent to third-party apps to access files stored in OneDrive for Business and SharePoint Online is a bad idea. There are certainly apps out there that need such access, but requiring one-time administrator approval is no hardship.
https://office365itpros.com/2025/06/19/app-consent-policy-user-app-consent/