Valid signing idetity not found?

Question

iOS

Hello dear habrchane.
Today I decided to try development for iOS and the Xcode environment.
A friend threw a developer account so that I could test my developments on the device.
And this is where I stumbled. It seems that he did everything according to the instructions, all certificates were loaded, but in the Provisioning Profiles section all profiles with the status “Valid signing idetity not found”
And debugging on the device does not start with a cry: “The identity 'iPhone Developer' doesn't match any valid, non-expired certificate/private key pair in your keychains"
The Iphone Developer certificate is in the keychain and is still valid.
The developer certificate is valid until August 2013.
I'm completely green in this matter, tell me what I'm doing wrong please!
Thank you very much in advance

Answer 1

Your friend most likely didn't give you the private key. See if the developer's private key is in the Keychain.
If not, then let your friend go to Keychain, select a private key, and click "export". When generating a .p12 file, he will be prompted to enter some kind of password. Let him send you this file, you will open it through your Keychain, enter this password and get his private keys.

Answer 2

It should be something like this: the Login tab, the Keys category, there is a private key with the name of the developer, and the certificate should also be enclosed in it.

Other possible causes of the error:
1) the bundle ID of the application does not match the one specified in the Provisioning profile
2) The device you are testing on is not added to the provisioning profile. After adding to the provisioning profile, the old one must be removed and the new one installed.
But in both cases, the error seems to sound different, not "The identity 'iPhone Developer' doesn't match..." but somehow differently