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Workaround for this issue for IOS "This certificate is signed by an unknown authority"

Source: Internet
Author: User
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The previous time when the certificate was created, the certificate in the previous keychain was completely deleted, and then when the new certificate was created "This certificate is signed by an unknown authority" red warning, by looking for data to find that the cause of this problem is: I deleted the certificate in the keychain, it is the iphone The issuer of the developer certificate, if it is deleted, will cause the iphone developer certificate to be recognized as an unknown authority signature, and then the error will appear on the real-machine debugging in Xcode.

Solution: Re-put Applewwdrca back in, download it from Apple's official website (http://www.apple.com/certificateauthority/) and double-click on the Keychain

Workaround for this issue for IOS "This certificate is signed by an unknown authority"

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