How to install old Production iOS certificate on new Mac and XCODE?

Question

Objective-C

The problem is this:
an application for the iPhone has been created for in-house distribution. I create the AppID of the application, Provisioning Profile, download it, try to compile it into an archive, for which I get:
No provisioning profiles with a valid signing identity (ie certificate and private key pair) were found.
No codesigning identities (ie certificate and private key pairs) that match the provisioning profile specified in your build settings (“iOS Team Provisioning Profile: *”) were found. Xcode can resolve this issue by downloading a new provisioning profile from the Member Center.
Naturally, when Provisioning Profile: NONE is set, the application is compiled and uploaded to the server. And it even runs on my phone after downloading. Unfortunately, only on mine. My vision of the problem is indicated in the title. I can’t create a new certificate, there are already the maximum number of them for Ad-hoc and In-house.
Who can advise what?
And thanks in advance)

Answer 1

To do this, you need to have a backup of the certificate (export from Keychain) and install it on a new machine. If there is no backup, then you will have to re-create the certificate in the Developer Center, download and install it, then update and download the Provisioning profile.

Answer 2

I would go the radical route, go to Organizer, remove all current certificates and provisioning profiles, and press the magic button so that it will install everything on its own based on your AppleID.
After that, in the project settings, I would set the desired Provisioning Profile again, if I correctly understood the essence of the issue.