title: this certificate was signed by an unknown authority
body: <p>I need to create ipa file for testing purposes.
  I go to Keychian access -> Certificate assistant -> Request a certificate from a certificate authority and create some.certSigningRequest file.
  Then I upload that file to customer iOS Provisioning Portal and create development and distribution certificate which I download and install on my vmware mac.
  When I select certificate i got message: <strong>this certificate was signed by an unknown authority</strong> <br>
  Here is the image:<br><br>
  <img src="https://i.stack.imgur.com/OogdL.png" alt="enter image description here"></p>
  
  <p>I am confused and don't know what can be wrong?</p>
  
  <p>Any help is greatly appreciate.
  Thanks people...</p>