Code signing is required for product type 'Application' in SDK 'iOS5.1'

Question

I am using xCode 4.3.1. After i created a project, i build it and tried to Archive. Then i got an error saying; (This is my first project in xCode 4.3.1)

Answer 1

I had this problem even though I had a valid provisioning profile for the device. It turned out that I had changed my developer account password and needed to update the password in xcode. This is done by going to preferences-Accounts-Apple ID and entering the new password.

Answer 2

TN2250 Tech document was retired,To resolve this add IOs5.1 or 8.1 sdk field under Anyios SDK field

in code sign problem will solved

Answer 3

Restarting Xcode did the trick for me. :)

Answer 4

It means you haven't assigned a provisioning profile to the configuration.

Usually it's because "Any iOS SDK" must have a profile and cannot be set to "Don't sign".

All this and more is answered in the TN2250 Tech Note about Code Signing and Troubleshooting.