我也遇到了同样的问题:我第一次是在跑步时把证书下载到我的小MacBook上的。当我试图在iMac上安装证书时…然后我遇到了这一页上描述的问题。

和你们很多人一样，我花了几个小时把头发揪出来，然后我按照下面的步骤来解决它:

Close all your stuff except your webpage that should be logged into App Dev center. Open Xcode. Click WINDOW > ORGANIZER. Then click the Devices tab and select "Provisioning Profiles" on the left. That should bring up your provisioning profiles. Highlight one by one (if more than 1), right click and delete profile. Yes, just do it! Delete them all! (I kept making a new one after a new one trying to make the thing work.) From the first page you see after logging into the App Dev Center on the right side click "iOS PROVISIONING PORTAL" > (do not "launch assistant"). Instead click on the left side. Select CERTIFICATES. You will probably have just one line listed with your name/company - from there click on the right side REVOKE. Click OK to verify that's what you want to do. On the same page click DEVICES. Click the box next to your device you are trying to provision and click REMOVE SELECTED. Again click OK to verify. Wait about 2 minutes to let Apple do their thing. Now click on "HOME" that is on the left side navigation. Click "Launch Assistant" create a new app ID - call it whatever you want. Just make sure it's unique enough to know that's the one you just created because the others you've been messing with all day will not be deleted from Apples Dev Center. You should be able to follow the rest of the Assistant without troubles -- the main thing is you just had to delete your old provision profiles and start over.

好运！

你需要:

1)私钥和公钥。

你的钥匙链上有这个符号

2)由这些密钥的签名请求生成的证书

3)连接到该证书的配置文件

假设你换了电脑，想重新设置Xcode配置文件。你是怎么做到的?

Open Xcode, press ctrl + O to open the Organizer, and delete all provisioning profiles you might have installed already. Open keychain access, and create a signing request which you save to file (when you create the request, a private and public key is created in your keychain). Create/Update a certificate in the provisioning portal by sending apple this signing request Download and install the newly created certificate. Revoke your provisioning profiles and update them with the new certificate. Download and install the newly updated provisioning profiles.

以我为例，我把这个项目从我的iMac复制到我的Macbook Pro，然后发现我的Macbook上没有安装我的私钥。所以我导出了我的私钥，复制并安装到Macbook上，瞧，它工作了!我在这里记录了这些信息: http://www.creatistblog.com/2009/09/iphone-developer-provisioning.html

我发现我需要拖动distribution_identity。我从开发人员程序门户网站上的“Certificates -> Distribution”页面下载的cer文件到密钥链访问程序中，然后这个错误就消失了。

对于两个不同的配置概要文件(开发和分发)，有两个不同的证书。您必须在keychain中安装两个证书。在iPhone开发者计划入口:

证书->开发->下载 证书->分发->下载

双击这两个证书。之后，两个证书都必须出现在Keychain中。

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。