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Resolve Code Sign error: The identity ‘iPhone Developer’ doesn’t match any valid certificate/private key pair in the default keychain

I ran into following error when clicking Build > Build and Go after you open your .xcodeproj file in XCode. I was attempting to download and run my iPhone app on my iPhone device (not the simulator).

XCode Error

XCode Error

Code Sign error: The identity ‘iPhone Developer’ doesn’t match any valid certificate/private key pair in the default keychain
The error means you need to create your provisioning profile (.mobileprovision file) and/or certificate (.cer file). To create both, first log into the iPhone Dev Center. Then click on the iPhone Developer Program Portal on the right:

iPhone Dev Center

iPhone Dev Center

Then click on “Launch Assistant” button (which will walk you through creating and installing the provisioning profile and certificate):

iPhone Developer Program Portal

iPhone Developer Program Portal


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