MacBook Pro with m2 chip

In general, this is how you can run unsigned applications. Note carefully Apple's warning.

Open a Mac app from an unknown developer - Apple Support

"Overriding security settings to open an app is the most common way that a Mac gets infected with malware. You should not override security settings if an app hasn’t been checked by Apple, even if the app looks like it comes from a major developer. The safest approach is to look for a version of the app from the Mac App Store or look for an alternative app."

You may believe that this "AIRY" is safe, but I know nothing about it, so I'm not going to assume that it is. Install it at your own risk.

did you obtain that software directly from the maker, here:

https://www.airy-youtube-downloader.com/mac/

I had no trouble installing or running it when obtained directly from that site.

what messages are you getting?

MacBook Pro with M2 can NOT be running MacOS 10.13 High Sierra.

What model-year MacBook Pro and what MacOS are you running?

What program is this that will not install?

EXACTLY what messages do you get?

stressocomputer wrote:

DOES IT MATTER a program a a program and I still may want to install it telling you what program it is will it then work and what if I want to install another program, then what, is it to hard to give me the instructions on how I can install a 3rd party program in MY COMPUTER?

Yes, it DOES MATTER what program you are trying to install. Some programs are compatible with that computer and that operating system, and some are not. The procedure for installing third-party applications also can vary from one application to another.

If you do not provide any information, you are asking us to blindly guess at any number of possible causes – and that's a fool's errand when there is no need for it.

If the copy from the vendor site doesn't trigger any security warnings, I'd be very reluctant to install whatever copy you found elsewhere that did.

The vendor site says

"Airy provides two free downloads of YouTube videos or music in MP3 format. After that, a license key is required to be able to use all YouTube downloader Mac features to the full extent."

Were you downloading it from some other site that promised a "cracked" version that wouldn't cost you anything?!? If so, be aware that pirated / cracked software is a very popular vector for the distribution of malware.

What program is this that will not install?

EXACTLY what messages do you get?