1. Close ERA server application and LF login page.
2. Go to Control panel select "Programs and Features" select uninstall program
3. You will see the new window where all the software applications are installed.
4. Find out dreamviewer software over their (It may be adobe dreamviewer or microsoft dreamviewer, any dreamviewer) and uninstall it and clear the cache of your respective browser i.e.(google chrome, mozila firefox)
5. Now start the ERA server.
if problem still persists then generate solar support ticket