I believe the latest xara installers come with a free edition/trial of magix music maker - if you let that install it could be this that is prompting 'magix connect' which is a tool linked to thier music programs specifically [such as vegas, music maker, sound forge etc] and could have been installed with any of these

Quote Originally Posted by MAGIX
Connect is a tool we use to communicate directly and efficiently with our customers in order to share valuable offers and other information
yuk

you can uninstall it from control panel - it is called Connect published by magix software GmbH