Getting “Cannot install applications because the certificate is not valid” error on iOS 7.1

Question

I\'m getting the above mention error when my client update their device to iOS 7.1, and then try to update our app from the AppCenter.

After some searching, i found a po

Answer 1

A change was introduced to iOS as of iOS 7.1 that requires OTA application installation to take place over HTTPS (rather than HTTP), and no provision exists to allow the user to continue to accept the old behavior (i.e., to permit application installation over HTTP). It is my understanding that this was done as a security enhancement.

In order to do application installations on iOS 7.1 from Application Center, you would need to configure your Application Center to use HTTPS rather than HTTP, using a certificate that will be accepted as valid by your iOS device - that is, either issued by a recognized public CA, or issued by a private CA that you have set up your mobile devices to accept. You can find more information about how to perform this configuration here:

http://pic.dhe.ibm.com/infocenter/wrklight/v6r1m0/topic/com.ibm.worklight.installconfig.doc/appcenter/c_ac_ssl_config.html