Cannot Install Extension – “You do not have access to this service.” (Chromebook)

Do you see this error message when trying to install the LockDown Browser extension on a Chromebook?

“We are sorry, but you do not have access to this service. Please contact your Organization Administrator for access.”

This message displays when a Chromebook is signed in with a Toromail email address.

To fix it, do the following:

1. Log out of the Chromebook.
2. Sign in using a personal email (not a student email).
3. Try installing the extension again.