iOS Over the air installation not working - cannot connect to server

We are facing an issue while deployment of our enterprise iOS application. We are following the documentation from Apple link - https://help.apple.com/deployment/ios/#/apda0e3426d7 We have followed the below steps, • Created an ipa with our enterprise app provisioning profile. • Created a manifest file that points to ipa and png files • Created an html with hyperlink to - itms-services://?action=download-manifest&url=https://location.company.com/sites/mobile/Files/Mobile/deploy/manifest.plist Hosted the html, ipa, manifest and png files in a folder in the server https://location.company.com . The following mime type is in the web server .plist -> application/xml .ipa -> application/octet-stream We instructed our employees to access the download page, in the following way, 1. Open https://location.company.com . It will as for userid and password. Need to login. 2. Display a page which have install app link. 3. Tap on the link to install the app. When I trying to click on the link, I am getting an error: Cannot connect to I tried to download the plist file from my iOS browser. It is working fine. The device log in the Xcode shows, the below log. > Jun 23 15:17:15 TOM-iPhone itunesstored : Could not load download > manifest with underlying error: Error Domain=SSErrorDomain Code=2 > "Cannot connect to iTunes Store" > UserInfo={NSLocalizedDescription=Cannot connect to iTunes Store} I have checked with our IT team and confirmed that the certificates are valid. But it is worked when I moved the plist, ipa and png files to dropbox and the link is itms-services://?action=download-manifest&url=https://dl.dropboxusercontent.com/s/55yozabctc2npd6/manifest.plist Only difference between these two what I feel is iTunes can access the link https://dl.dropboxusercontent.com/s/55yozabctc2npd6/manifest.plist directly. But iTunes cannot directly access the link - https://location.company.com/sites/mobile/Files/Mobile/deploy/manifest.plist , as it has an authentication page in between. That means if I open a fresh browser and try to open link - https://dl.dropboxusercontent.com/s/55yozabctc2npd6/manifest.plist , it download the file in my iPhone browser. But if I try the same with the link https://location.company.com/sites/mobile/Files/Mobile/deploy/manifest.plist it ask me for user name and password. Any help much appreciated.