Troubleshooting Step 1:

Disable any internet security such as Norton Internet Security, McAfee Personal Firewall, or Panda Firewall and click Reauthorize. If you receive “EST Permanent” or “TKO Permanent” in the Authorization Status box you are now authorized. Re-enable your security software and begin working.

If you are connected to a network (LAN) you need to contact your IT department or Network Administrator to ensure there is no network level protection which may be interfering with the authorization process. 

If you still receive error messages move on to Step 2.