我也遇到过同样的问题。这是因为证书的私钥在您的机器上不存在。

If you are now using a new machine and download the certificate from website: You can export the certificate from the old machine and then import on the new machine. If you share the developer account with someone: You ask the account owner to send you an invitation and become a team member of that account. Then you can create your own certificate from scratch. If you don't want to handle all these sh*t: Just revoke the certificate on website and delete the copy on your local machine. Then request a new one. This should be the ultimate way for solving such issue.

我也遇到了同样的问题，试过了所有方法。不管出于什么原因，解决方案是我所有的证书都迁移到一个名为“microsoft_intermediate_certificates”的密钥链上。因为它可能发生在Xcode升级期间，我完全不知道为什么，但它可能会帮助到一些人。

我将微软钥匙串的所有内容移动到登录钥匙串，一切恢复正常。

For Xcode 13 (maybe earlier?) - The key to this is to use the "Build Settings" tab, not the "Signing and Capabilities" tab in your Target Settings. Once you are in "Build Settings", search for the "Signing" section (you can type "Signing" in the search box). There you will see a sub-section called Code Signing Identity. In that section you can click on each line and directly choose any certificate you have in your keychain. You need to do that for all of the relevant configurations (the ones that you want to upload to TestFlight/AppStore). When you go back to the "Signing and Capabilities" tab, you should see the results of what you did and the error should have gone away.

我从下面的答案中得到了灵感:https://stackoverflow.com/a/37043501/826946

但我认为明确地列出这一点可能会有所帮助。

昨天也遇到了同样的问题。现在，在签署到开发人员门户之后，对于每个无效的配置概要都有一个按钮“Renew”。更新和下载更新后的配置文件似乎都能正常工作，所以问题肯定解决了:)

更新:你可能需要联系苹果来获得一个“更新”按钮，或者他们删除了它——解决方案是下载它并添加到钥匙链，不需要更新。

对于开发证书，您只需创建一个新的证书并将其与配置文件匹配即可。但是对于分发，就像你要提交给苹果时，你不能这样做，必须使用团队代理创建的分发证书。问题是您需要计算机上的私钥。这很简单，但是，创建证书的团队代理复制私钥给你，下面是来自Apple的说明，我希望这对你有帮助。

It is critical that you save your private key somewhere safe in the event that you need to develop on multiple computers or decide to reinstall your system OS. Without your private key, you will be unable to sign binaries in Xcode and test your application on any Apple device. When a CSR is generated, the Keychain Access application creates a private key on your login keychain. This private key is tied to your user account and cannot be reproduced if lost due to an OS reinstall. If you plan to do development and testing on multiple systems, you will need to import your private key onto all of the systems you’ll be doing work on.

To export your private key and certificate for safe-keeping and for enabling development on multiple systems, open up the Keychain Access Application and select the ‘Keys’ category. Control-Click on the private key associated with your iPhone Development Certificate and click ‘Export Items’ in the menu. The private key is identified by the iPhone Developer: public certificate that is paired with it. Save your key in the Personal Information Exchange (.p12) file format. You will be prompted to create a password which is used when you attempt to import this key on another computer. You can now transfer this .p12 file between systems. Double-click on the .p12 to install it on a system. You will be prompted for the password you entered in Step 4.

这里的每个人都错了。你所需要做的就是按照苹果在“管理你的数字身份”中提供的步骤操作。

它指导你通过Xcode导出你的证书，并通过Xcode重新导入。它工作得很好，但要确保你的用户名在两台电脑上是相同的，否则就会失败。