On May 10, 2016, Microsoft released MS16-051. which contains an update for Internet Explorer KB3154070. This changes how Iframes are loaded, and caused all Iframes in the IT Management suite to cease working correctly.
There are two solutions.
If you are on 7.6 HF7, a pointfix is available that will resolve the issue.
For other versions, or if the pointfix is not able to be installed, the following work around can be used.
On the affected machines, we will set up a local group policy to enable Enterprise Mode of Internet Explorer 11. This will allow us to specify a list of websites and what version of Internet Explorer to emulate the page in.
On the effected machine, go to Start > Run. Type into the run dialog "gpedit.msc"
In the Local Group Policy Editor, we are going to change two policies. First go to Computer Configuration>Administrative Templates>Windows Components>Internet Explorer, then select the Let users turn on enterprise mode from the Tools menu policy. Set this to Enabled.
Next open the Use the Enterprise Mode IE website list policy. Set this to "Enabled" and in the option area, we will set the file name it will refer to. We can either use a URL, or a local file. For the purposes of this article we will use a file path. File path I will use is "file///c:\Sitelist.xml"
After downloading and installing, run the program. In the program we will click the "Add" button. In the window enter the URL to your Management Platform. Set the "Launch in" options to IE9 Document Mode.
Click File > Save to XML, and name the file as "Sitelist.xml" and put that file in the directory specified in step 3.
Restart Internet Explorer and load the Symantec Management Console.
This step will need to be performed on every machine effected, unless this is done by a network administrator to the whole network via the global policies.