Product always indicates that an uninstalled application is out of date

Even after reinstalling the app, running CCleaner again to make sure it doesn’t show up as out of date. Then after uninstalling the app again, the subsequent run of CCleaner lists the uninstalled app as out of date again.

Is it skype?

Yes.

It’s detecting the built-in skype (built into earlier version of windows 11 and i think 10) that while it’s been depreciated has not been removed by microsoft

See here for more info

OK. Thank you.