Network Diagnostics app missing

Replying to myself. Those google search things about using terminal command do not work.

Re:

http://osxdaily.com/2017/07/14/where-startup-sound-new-imac-macbook-pro/

Not the same app at all. some overlap, but one is for network diagnostics and the other just wifi

That is not it.

Yup, miss read the post. Now how to delete my post... -_-

Thank you, thank you, thank youuu... 🙏

How does this help one know where the problem is? How does changing one's internal wifi connection tell you that the problem is with the ISP connection to the internet?

I am interested in solutions, not in the nature of technical problem. My solution works a 100%.

Thanks Keith. I can’t get the right files somehow from my computer still using Sierra. I have some background learning to do to understand where I am screwing up I think

Sent from Steve's iPhone

This is all greek to me. So much for user friendly. Very disgruntled by this BS.

Shawnnafromwa,

Please use the links previously provided to let Apple know that you are unhappy.

Unless you have a Startup/install copy of Sierra to install, you can't. When they released High Sierra, they pulled Sierra from your purchases listing at the App Store.

From what I have seen, you have to BACKUP your drive, erase it, and then startup and install your copy of Sierra.

If you can't back up, don't even think about it.

Here is a more detailed link (there are others):

https://www.imore.com/how-downgrade-macos

MariaNinguem, just to clarify, Network Diagnostics and Network Setup Assistant are two separate apps, each with their own frameworks. You don't even need Network Setup Assistant if all you want is Network Diagnostics. The latter has only one framework, so that's why it works. Have you tried the setup assistant to see if it works with only the one framework? It might be that the 10.10 version required only one. They're adjacent to each other in the same folder, so if you don't see it, SetupAssistantFramework.framework may not have been used yet.

I do recommend that you change ownership of the files back to root, especially after you re-enable SIP. All files in the System folder should be owned by root:wheel (shows up as "system" & "wheel" in Finder).

You are correct that Apple could change something else to make diagnostics stop working. This is another reason to set the ownership of the files correctly: the next time there's an OS update or upgrade, those files will likely be removed if they have the wrong owner. Make sure you store them in a safe place in case you need to repeat the process of restoring them in the future.

Don't forget to express your outrage to Apple, since I doubt if they read all of these discussions: Feedback - macOS - Apple