1) This error is displayed if you have port 443 blocked and are trying to register a writer license.
Either unblock port 443 or change the URL in the license link to https. To do this:
- use the ‘Remove Keystore’ option from: Windows Start menu >> All Programs >> Locklizard >> Safeguard >> Viewer >> Remove Keystore.
- paste the license link into your browser and change the https to http.
If you have received the license file as an attachment then you need to ask the company that sent you the license file for an HTTP version.
2) This error may also be displayed if you are using a linux or unix server and the URL in the license file is displayed in the wrong case since linux and unix servers are case sensitive.