Xamarin iOS deployment failing after iOS 15 update

VC 1 Reputation point

A Xamarin application that was successfully deploying to local iOS devices now fails. Only 2 changes:

  1. The devices are now updated with iOS 15
  2. Visual Studio was also updated to 16.11.3 from previous update.

The error message is:
Deploy Error: Could not install the application 'C:\Users...iOS.ipa' on the device xxx. Details: ApplicationVerificationFailed(3892346901) - Failed to verify code signature of /var/installd/Library/Caches/com.apple.mobile.installd.staging/temp.3nSuVH/extracted/Payload/....iOS.app : 0xe8008015 (A valid provisioning profile for this executable was not found.)

I have tried deleting and re-adding the apple account and changing devices (I don't have an iOS 14.x device now unfortunately but nothing else has changed).

Development environment: VS 2019 16.11.3 (updated to latest version) on a PC with iPad/iPhone connected locally through USB.

A Microsoft open-source app platform for building Android and iOS apps with .NET and C#.
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  1. Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 20,606 Reputation points Microsoft Vendor

    Welcome to our Microsoft Q&A platform!
    Xamarin.iOS latest version supports for Xcode 12.5 and iOS 14. If you use VS 2019 16.11.3 and Xcode12.5, you could have a try to use Manuan Provisioning and check the profile in your mac . However, it doesn't include the iOS 15 SDKs APIs, if you use new features, some unknown error may occur when you deploy it to device.
    For more nformation, you can refer to
    Best Regards,
    Wenyan Zhang

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    1 person found this answer helpful.

  2. Pat Caruthers 96 Reputation points

    I found the latest VS, version 8.10.10 for the Mac works with the latest Xcode, version 13.0

    I had removed my old profiles and remake them, but do not know if that was necessary.

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