Control center does not load on Firefox

Mozilla Firefox throws a CORS error message when accessing IBM RPA Control Center.


You get the a CORS error when accessing IBM RPA Control Center;

Resolving this issue

To resolve this issue, you must disable HTTP/2 in Mozilla Firefox, and in Internet Information Services (IIS). The following procedures shows a procedure to disable HTTP/2 in both cases.


Disabling HTTP/2 in Mozilla Firefox

If you’re trying to browse to a website and you’re getting the NS_ERROR_NET_INADEQUATE_SECURITY error in Firefox and you’re not an administrator of the server, you can disable HTTP/2 in Firefox.

  1. Open Firefox and type about:config in the address bar.
  2. Click "I Accept the risk".
  3. Search for network.http.spdy.enabled.http2.
  4. Change the value to False.
  5. Restart your browser.

Disabling HTTP/2 in IIS

  1. Start IIS manager.
  2. In the left pane, go to the website under which the Portal virtual directory is added.
  3. In the Actions column displayed in right pane, click Bindings.
  4. While adding https port binding, select the check box for the Disable HTTP/2 parameter.
  5. Save the change and perform an IIS reset.

🛈 Requirement: You must be a server administrator to disable HTTP/2 in IIS.