Automate Google Workspace Password Resets with Apps Script

In today’s fast‑moving digital landscape, maintaining strong authentication across a Google Workspace domain is a critical security pillar. Administrators often face the daunting task of resetting passwords for dozens—or even hundreds—of users after a security incident, policy change, or routine compliance audit. Manually updating each account is not only time‑consuming but also prone to human error. Fortunately, Google Apps Script, a cloud‑based JavaScript platform, offers a powerful, automated way to enforce a password reset across the entire organization with just a few lines of code. This article walks you through the prerequisites, script creation, testing, and deployment steps, empowering Workspace admins to regain control quickly, securely, and at scale.

Preparing Your Environment

Before diving into code, ensure you have the necessary admin privileges and API access. The Admin SDK Directory API must be enabled in the Google Cloud Console, and a service account with Domain-wide Delegation should be created. Assign the required scopes—https://www.googleapis.com/auth/admin.directory.user and https://www.googleapis.com/auth/admin.directory.user.security—to the service account. Finally, add the service account’s client ID to the admin console under Security → API controls → Manage domain-wide delegation. This setup grants the script authority to read and modify user credentials across the domain.

Writing the Apps Script to Force Password Changes

The core of the solution is a short Apps Script that iterates over a list of users and updates their password field to a temporary value, then flags the account to require a password change at next sign‑in. Below is a concise example:

• Initialize the Admin SDK service with AdminDirectory.Users.update method.
• Retrieve the target users—you can pull all users, filter by OU, or import a CSV of email addresses.
• Generate a secure temporary password (e.g., using Utilities.getUuid() combined with a custom prefix).
• Update each user by setting password and changePasswordAtNextLogin = true.
• Log successes and failures to a Google Sheet for audit purposes.

Because the script runs under the service account, it bypasses individual user consent, ensuring the operation completes swiftly even for large user bases.

Testing and Validating the Script

Never deploy a password‑reset script directly to production without a controlled test. Create a sandbox OU and copy a handful of test accounts into it. Run the script with dry‑run mode—comment out the actual update call and instead log the intended actions. Verify that:

• Temporary passwords meet your organization’s complexity policy.
• Users receive the “change password at next sign‑in” prompt.
• The audit sheet records accurate timestamps and error messages.

After confirming the dry‑run behaves as expected, enable the live update call and monitor the execution log for any API quota limits or permission errors.

Deploying at Scale and Automating Future Resets

Once validated, publish the script as a standalone web app or bind it to a Google Sheet for a user‑friendly interface. Add a custom menu that lets admins select an OU or upload a CSV of usernames, then trigger the reset with a single click. For recurring compliance checks, set up a time‑driven trigger (e.g., monthly) that forces password changes for users who haven’t updated their credentials within the defined period. Combine this with email notifications—using MailApp.sendEmail—to inform users of the upcoming change and provide instructions for creating a new password.

Conclusion

Automating password resets with Google Apps Script transforms a tedious, error‑prone manual process into a secure, repeatable workflow. By preparing the admin environment, crafting a focused script, rigorously testing in a sandbox, and finally deploying with user‑friendly controls, Workspace administrators can swiftly enforce password policies across the entire organization. This approach not only enhances security posture after incidents or audits but also saves valuable IT time. Implementing the described solution empowers admins to maintain compliance, reduce risk, and ensure that every user’s account remains protected with fresh, strong credentials—every time.