That is a Java issue. In the Java control panel you will need to add the site to the exception site list. I still get that message even when the aplet loads correctly.
I experienced the same issue a while back on UCM 7.1.3. I spent days trying to fix the issue with upper management breathing down my neck. Out of desparation I restarted Call Manager and it resolved the issue. I have no idea why it started and tha...
Here is the article I followed to get it working. Hope this helps.http://www.cisco.com/en/US/products/sw/iosswrel/ps5207/products_feature_guide09186a00802d1c31.html