ISSUE
After importing a new license file for Nintex Workflow or Forms, the following message might still appear in the designer:Your license for this server has expired.
ERROR CODE
RESOLUTION
Option 1
Make sure that the SharePoint Timer Service is running. If it isn't start it. If it is, restart it. Perform an IISRESET.Option 2
If an IISReset fails to resolve the issue, clear the SharePoint Cache. For more information, see SharePoint 2010 – Clearing the Configuration Cache.An IISReset should be enough to resolve this, as it will trigger the property update, however if the configuration cache has not been cleared/refreshed in some time then working through the above may be necessary.