Xcode ios app development code signing
问题 When I run my app into my iphone I have this Warning: unable to build chain to self-signed root for signer "". My application Installed in iphone but it closed suddenly. 回答1: I had the same problem and basically did like posted in the comment: Remove my account at Xcode / Preferences at the top right. open keychain. At the left "my certificates": Delete the Mac or iPhone etc Developer certificate. just starting Xcode again and creating a new account like one did when starting Xcode for the