Exporting iOS code signing files manually

Start Xcode.

Select Xcode > Preferences from the navigation bar.

At the top of the window select Accounts.

Select your Apple ID and your team from the right side bar, then click on View Details....

A dialog will appear where you will see your code signing identities and the provisioning profiles.

Select the certificates and choose Export from the pop-up menu.

Enter a filename in the Save As dialog. You can set a password and a verification to store it securely, but it’s not necessary.

Xcode will export the requested certificate in .p12 format.

Start Keychain Access.

On the top left sidebar select login and on the bottom left select My Certificates.

This will list all your installed certificates and the associated private key.

Select the one that you would like to export and choose Export from the pop-up menu.

Enter a filename in the Save As dialog. You can set a password and a verification to store it securely, but it’s not necessary.

Keychain Access will export the requested certificate in .p12 format.

Start Xcode.

Select Xcode > Preferences from the navigation bar.

At the top of the window select Accounts.

Select your Apple ID and your team from the right side bar, then click on View Details....

A dialog will appear where you will see your code signing identities and the provisioning profiles.

Locate the profile that you are looking for under Provisioning Profiles.

If you don’t have it installed on the system, click on the Download button next to it.

Choose Show in finder from the pop-up menu, that will show you the installed provisioning profile for you.

Go to https://developer.apple.com and log in.

Select Certificates, Identifiers & Profiles from the left sidebar.

Navigate to Provisioning Profiles > All.

Find the Provisioning Profile you are looking for from the list or use the search to filter.

Click on the selected Provisioning Profile, this will expand the details.

If its status is invalid, you can click on the Edit button and save again.

Click on the Download button to download it and double click to install on your macOS.