When shutting down my Macbook OSX 10.9.5 an install window appears that reads:
to cancel installation click abort.
There are 2 buttons: install and abort.
I have nothing to install, had everything I don't want/need uninstalled using CleanMyMac2.
When I click abort the laptop shuts down normally and starts up normally, it does not seem to influence performance.
To make sure I used disk repair, there were some minor issues but after repair the disk appears to be ok.
When I click Install I get a window that reads:
The requested URL/agent_update?session_id=728948AO-3017-
was not found on this server.
I made a photo of the screen, this message appears only a few seconds, then it disappears and the laptop shuts down.
Photo included in attachment.
Does any one know what this is and how to remove it?