First, Do not turn off your AV protection just for the sake of not getting the alerts. It is definitely for your long term good.
However, try to recognize to which software that the Updater.exe belongs and remove it if it is harmful or unknown.
Main problem with the updaters : They can download files in your computer and install automatically without your permission if you have left the Update automatically option during the installation of the software. If a Trojan program is installed in your system, then it is no longer called "your system" in the security circle.
By reading through the link you have given in your question, i see that URL:Mal could be the culprit that is trying to harm your system.
If one of the software that you installed is trying to access a malicious website or vicious URL then the AV comes into action by detecting it as a kind of virus infection.
It is important to pay attention to this issue or else your web browser might get affected. Then there will be a lot of stuff will happen to your browser (like unknown add-ons, tool bars, unwanted ads,etc.,) and your AV will detect even the normal websites you visit as harmful once your browser is infected.
Now all you have to do is just to confirm whether the detected Updater.exe is harmful and carry on with the removal process(I found Remove URL:Mal and Removal Mal articles that gives a walk through on the removal of URL:Mal infectors). If you are not sure about the existence of such malwares in your system there are plenty of ways to sweep them off using a good anti-malware with an updated anti-virus software.