Outdated apps

Hi, I've just found this topic and I am having the same problem. The outdated app in my case relates to Skype. I unistalled Skype quite some time ago but each time I run the CC health I get the outdated app (security issue) message. Is this a Skype issue or a CC issue? I am using CCleaner Pro - 6.25.11093 on Windows 10 / Firefox browser. If anyone has an update on this issue I would be grateful for any advice.

Thanks

George