"Updates are ready to install" but I couldn't install My company had given me an iMac to use and apps like iMovie, iPhoto had been installed by a former employee who had been using this iMac before me. Now the problem is; Updates are available for those apps, but I could not install updates of those apps because OS asks for password of that person's Apple ID. OS daily prompts me about updates but i can't install updates as well as stop notifications to prompt. 

I seriously don't like these notifications and can't find a way to stop them.

I need either of the following possible solutions:


No more "update" notifications.
Change Apple ID of those apps.


Is there a way to achieve any?? 

BTW I m using OS X Mavericks 10.9.1
See this answers to your questions:

Also to take full ownership of the computer:

Make a user account with administrative privileges, and disable the other account (the previous owner)