How to avoid being preempted by GMS

Problem Definition:

When trying to make configuration changes to the firewall a screen pops up with the following message:
You have been preempted by another administrator

Resolution or Workaround:

Step 1: In the address bar of the web browser, there should be a 'main.html' file reference.
Replace 'main.html' with 'diag.html'.

Step 2: Disable "Allow SGMS to preempt a logged in administrator" under the Management Settings.

Step 3: Scroll to the top of the page and click 'Accept'. Click the 'Close' button underneath the 'Internal Settings' button.

After this change GMS won't preempt the administrator of the firewall any longer.