这意味着你需要做以下任何一件事:

你应该已经在开发者中心创建了一个证书，然后将该证书包含在配置文件中，然后导入到XCode中。 否则，如果您使用的证书是由其他人创建的，那么让他们共享/导出他们的证书和私钥(。P12文件)给你，你需要包括这个到你的钥匙链。请参考这里

当您无法从创建者那里获得证书& .p12文件时，#2的解决方案是选中“自动管理签名”选项。

对于那些仍然在Xcode8中与这个问题作斗争的人。对于我来说，这是一个重复的证书问题，这是我解决它的方法:

我读了尼克的回答，然后开始了我的调查。我检查了我的特定案例中的所有密钥和证书(在~/Library/Keychains/System.keychain中)。

When I opened the file, I found that I had two iPhone Distribution Certificates (that was the certificate that Xcode was requesting me), one with the iOS Distribution private key that I have been using since the beginning, and another iPhone Distribution Certificate which its private Key had a name (iOS Distribution:NAME) that wasn´t familiar for me. I deleted this last certificate, started Xcode again and the problem was gone. xCode wasn´t able to resolve that conflict and that´s why it was giving signing certificate error all the time.

检查你的钥匙链，也许你有一个重复的证书。

I haven't seen this mentioned yet but if you are still having issues after recreating your provisioning profiles, deleting the existing ones you have in your Provision Profiles folder, checking for dupes in your Keychain, etc (all other answers ITT), open your Target > Build Settings > Code Signing and make sure everything looks consistent in there. For example, I had changed the Code Signing Identify for Debug to a Distribution identity, which obviously wouldn't work as the Development Provisioning Profile doesn't have the Distribution certificate and was causing the error in the first place.

值得注意的是，自动签名每次都失败了，直到我手动删除了本地配置文件: ~ /图书馆/ MobileDevice /配置概要文件

在这之后，自动签名工作得很好，它从苹果服务器上获得了正确的配置文件。

这只影响了一些构建，特别是那些我手动为手表应用程序创建配置文件的构建。

同样的错误。 配置文件似乎更新了，添加了新的证书，我甚至在下载时检查了它。还撤销了前开发商的证书，排除在提供配置文件。 但是Xcode仍然在问我之前的证书有错误:

No certificate for team 'MY_TEAM' matching 'iPhone Developer: FORMER_DEVELOPER' found

那么，我是怎么解决的呢:

去构建设置->签名->代码签名标识 找到所有“FORMER_DEVELOPER”证书并选择所需的证书。

希望它能帮助到一些人。

我尝试了很多方法，但唯一解决这个问题的方法是在xcode中配置一些东西:

构建设置->签名:

代码签名标识:所有选项均选择iOS Developer。 代码签名风格:自动 配置文件:自动