Some Older Browsers Can't Verify Identity or Security of U-M Websites

Problem/Question

Older browsers may report certificate / security errors when trying to access U-M websites, because they lack the ability to verify some newer security certificates. In this case the browser may report a problem with the website, although the issue is more accurately a limitation with the browser, or the operating system running the browser.

Example errors:

  • Can't verify identity of website, Continue?
  • This website may not be secure, Continue?
  • Your connection is not private.

Overview

A user could be running an older version of their current web browser or just the browser itself could be the problem when trying to perform a task on a U-M site, but can't. The browser may say it's the website's fault, but it's the browser the user is on.

Solution

For MacOS 10.11.x (and older)

  1. Download the new root certificate - either here https://crt.sh/?d=1199354 or attached to this KB (usertrust-2038.crt)
     
  2. Click the downloaded file to launch Keychain Access.
     
  3. Click OK to continue through the warning menu that pops up as the Mac Keychain Access tool starts.
     
  4. Select the Keychain System from the dropdown.
     
  5. Hit OK.
     
  6. Click Always Trust on the window.
     
  7. Restart the computer.

For MacOS systems when the above steps do not work

  1. Update to the newest version of Firefox or Chrome that will run on the device.
     
  2. If still experiencing trouble, update to a recent version of the operating system (MacOS, Windows, iOS, Android), then try step 1 again.

Windows and other non-Mac systems

  1. Update to the newest version of Firefox or Chrome that will run on the device.
     
  2. If still experiencing trouble, update to a recent version of the operating system (Windows, iOS, Android), then try step 1 again.

Additional Information

Additional information, including specific browser and systems that are impacted: https://support.sectigo.com/articles/Knowledge/Sectigo-AddTrust-External-CA-Root-Expiring-May-30-2020

For additional information, check these categories in the Knowledge Base:

 

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Details

Article ID: 110840
Created
Thu 6/25/20 10:35 AM
Modified
Thu 6/25/20 10:58 AM