Hello,
You can disable Internet Explorer Enhanced Security Configuration from within the Server Manager:
- Open the Server Manager
- Highlight Server Manager in the left-pane at the top
- In the right-pane, under Security Information, click Configure IE ESC
- Turn the Administrators & Users options Off
- Click OK
and
Turn off Enhance Security on the machine.
I would also suggest you to follow these steps below:
Restart the machine and then Either Run a Repair of SEPM
OR
Run upgrade.bat to update schema to new version:
1- Stop the Symantec Endpoint Protection Manager services;
click in start --> run --> type services.msc --> stop the Symantec Endpoint Protection Manager
2- Go to <local drive>\Program Files\Symantec\Symantec Endpoint Protection Manager\bin\upgrade.bat
Hope that helps!!