早上测试的手机还可以和Xcode连接跑程序，但是这会突然手机和Xcode不能连接了，报错的问题就是Please verify that your device’s clock is properly set, and that your signing certificate is not expired.
但是这台不是越狱手机啊，而且一直也在电脑上跑，为什么会出现这个问题，求解！！
但是这台不是越狱手机啊，而且一直也在电脑上跑，为什么会出现这个问题，求解！！
解决方案 »
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Click on 'Certificates, Identifiers & Profiles'
iOS Apps must not have an expiration date notification or else renew it, and come back here
Click on 'Provisioning profiles'
If no one has 'active' status, that is the problem
Add one for 'iOS App Development'
Choose the right 'App ID' : your BundleID, or wildcard
The next screen should show you valid certificates. If not, go create one (click on 'Certificates' item on the left menu) and come back here
Choose one certificate
Then you see all the devices you declared in 'Devices', select those on which you want to run your app
Give a profile name and generate it
You will download a file named : [profile name].mobileprovision
Double-click to install it
At this step, my problem was solved. Build and run on my phone is ok.
谷歌到的 基本就是你的证书过期了 也可能是你的APP id过期了
Solution within Xcode:In Xcode, go to Preferences --> Accounts --> View DetailsPress the refresh button in the lower left corner (called Download all in Xcode 7)
PS:Sometimes it may also help to delete invalid provisioning profiles: right-click -> move to trash
I saw this error exactly one year after signing up as an Apple developer.另外可以配合Code Signing 里面重新配置一下
http://blog.csdn.net/rekrad/article/details/17860117
没有的话
进入钥匙串管理 把相关的证书删掉，然后在回到Xcode 选完 identity - Team 后选fix
2.彻底关掉xcode，然后重新打开
3.重启下电脑
4.确定你的手机的系统与所使用的xcode 版本兼容
5.查看下是否是手机时区错误了
6.确定你的证书是真实有效
7.确定你电脑的Apple Worldwide Developer Relations Certification Authority证书没有失效，如果已经失效，请百度解决办法