title: iOS test application HelloWorld - App could not be downloaded at this time
body: <p>I have working application HelloWorld.ipa which is successfully deployable by MDM system (Mobile Device Management). </p>
  
  <p>I'm trying to create several another versions of sample HelloWorld app to test the MDM. I installed virtual machine with macOS 10.13.4 and Xcode 9.3.1 and successfully created HelloWorld.ipa. I tested the apps in Xcode simulator with no problem. </p>
  
  <p>I don't have developer account, so I extracted the app from archive, compressed it and save as .ipa. Everything worked fine, but when I try to deploy the application via MDM, I get "<em>App</em> could not be downloaded at this time". I'm trying to get it to work for several days :( Thank you</p>