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Home/ Questions/Q 7551663
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Editorial Team
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Editorial Team
Asked: May 30, 20262026-05-30T10:33:16+00:00 2026-05-30T10:33:16+00:00

I m stuck with this error: Code Sign error: Certificate identity ‘iPhone Developer: My

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I m stuck with this error:

Code Sign error: Certificate identity ‘iPhone Developer: My Name (xxx)’ appears more than once in the keychain. The codesign tool requires there only be one.

I try to renew the build a new CSR, remove the old certificate, build a new one, again and again and again and this error is still present

in the keychain I dont see any duplicated certificate and if I remove the only one I can see in the keychain , Xcode complains that the certificate can’t be found …

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  1. Editorial Team
    Editorial Team
    2026-05-30T10:33:18+00:00Added an answer on May 30, 2026 at 10:33 am

    Xcode 4.3 now searches all keychains for signing certificates but that is increasing the frequency of the build error:

    Certificate identity (x) appears more than once in the keychain…

    Apple’s steps to resolve it are here:
    “How do I resolve the CodeSign error: Certificate identity appears more than once in the keychain?“

    However, if you are affected by the keychain bug mentioned in the final note of that guide, following is a simpler and preferred solution to problem:

    1) Keychain Access > Edit > Keychain List, uncheck “Shared” for the login keychain.

    2) next, IF going back into the Keychain List you find the login keychain is still marked as Shared, create a backup of the following files and then remove them if they exist:

    /Library/Preferences/com.apple.security-common.plist
    ~/Library/Preferences/com.apple.security.plist
    

    3) Retry your build.

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