Issue

When signing in to your U.S. CAD Support account the following error is displayed:

Cause

The error uscad.zendesk.com refused to connect comes from privacy settings blocking third-party cookies. In most cases, the error seems to be isolated to the Google Chrome and Firefox browsers.

Solution

To solve this issue, make sure the browser allows third-party cookies, at least from Zendesk. Follow the steps below for the applicable browser.

GOOGLE CHROME:

1. On your computer, open Google Chrome.
2. At the top right of your browser, select the More button > select Settings.
3. Under the Privacy and security section > select Cookies and other site data.
4. Click the Add button for Sites that can always use cookies:
5. Add uscad.zendesk.com to the Site field > check All cookies, on this site only > select Add:

FIREFOX:

1. On your computer, open Firefox.
2. At the top right of your browser, select the Open Menu button   > select Options.
3. Select the Privacy & Security panel.
4. Under Cookies and Site Data > select Manage Exceptions:
5. Add uscad.zendesk.com in the Address of website field > Select Allow > select Save Changes:

AD-BLOCKERS:

If your browser has ad-blockers, turn them off to see if this allows you to sign in. Some ad-blockers have their own list of exceptions. If that is your case, add uscad.zendesk.com to the allow list.