Authorization Failed, Access Denied, or Blank Screen When Authenticating with Google Drive in Canvas


Google Drive LTI


A student or teacher is unable to access an embedded Google Drive file. The student or teacher may be prompted to authenticate with Google. After completing the authentication steps, they are presented with an "Access Denied" message, "Authorization failed" message, or a blank screen. Scenarios when this can occur:

  • A teacher embedded a Google Drive file into an Assignment details and the student cannot view the file when accessing the Assignment
  • A student submitted a Google Drive file as an assignment submission and the teacher cannot view the file in Speedgrader


This often occurs in Google Chrome and the student or teacher may be logged into Chrome with multiple Google accounts (UMICH and personal). 

  1. Sign out of all Google accounts in Chrome and then re-authenticate with only your UMICH account
    1. Sign out of Chrome
  2. Clear browser cache and cookies
    1. Clear Cache and Cookies (Temporary Internet Files) 
  3. Verify the browser is not blocking third party cookies
    1. Change your cookie settings in Chrome
  4. Delete the Google Drive LTI token and Google Drive Registered Services and re-authenticate
    1. In Canvas navigate to Account > Settings
    2. Scroll down to the Registered Services section
    3. If present, delete Google Drive by clicking the red X
    4. Scroll down to the Approved Integration section
    5. Delete Google Drive LTI IAD-Prod by clicking the trashcan icon
    6. Sign back into Google Drive Registered Services
    7. Navigate back to the Assignment, Speedgrader, etc and re-authenticate Google Drive (this should create a new Google Drive LTI token in Account Settings)

If the above steps do not resolve the issue

It is possible a personal Google account became linked with the Google Drive LTI for Canvas. A non-UMICH account will not be able to authenticate with the Google Drive LTI for Canvas.

  1. Log out of Canvas
  2. Navigate to
  3. Under Third-Party apps with account access click on Google Drive LTI by Canvas
  4. Click the Remove Access button
  5. Sign out of Google
  6. Repeat steps 1-5 for each Google account that was logged into Chrome. Note that not all accounts will have Google Drive LTI by Canvas listed under Third-Party apps with account access, however it is important to remove access for those accounts that do
  7. Close all your browser windows and relaunch Chrome
  8. Log back into Google with your UMICH credentials
  9. Log back into Canvas
  10. Navigate to the Assignment, Speedgrader, etc and re-authenticate Google Drive

Additional Information


Article ID: 6679
Fri 10/29/21 12:56 PM
Fri 9/30/22 5:07 PM