Remove This Application Was Created By A Google Apps Script User File

Troubleshooting tips (2–3 bullets): common pitfalls and fixes.

This is the preferred method if you want a professional presentation without requiring users to install anything. 2. Verify Your Project with Google Cloud (GCP)

Before attempting to remove the message, you must understand its cause. The warning appears when a Google Apps Script application attempts to access sensitive user data (like Drive, Gmail, Sheets, or Contacts) or perform actions on behalf of a user without completing Google’s verification process.