.NET iOS compatibility with Xcode 27

Question

.NET iOS compatibility with Xcode 27

Jermin Contractor 25

Hi,

I recently updated Xcode to latest version - 27. However, the current .NET iOS workload does not appear to support this version yet. While building my project, I received the following error -

"This version of .NET for iOS (26.5.10318) requires Xcode 26.6. The current version of Xcode is 27.0. Either install Xcode 26.6, or use a different version of .NET for iOS."

I would like to know:

Is there an expected timeline for when .NET iOS will support Xcode 27?

For context:

.NET SDK version: 10.0.401
iOS workload: 26.5.10318
Development environment: Rider on macOS

Any guidance or updates would be appreciated.

Thank you.

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Answer accepted by question author

Bruce (SqlWork.com) 85,456

Each release of the Maui build tools are tied to a version of Xcode. You will need to wait for another release of Maui to get Xcode 27. In the mean time you need to reinstall Xcode 26 (Google for instructions for side by side if you want). Probably the Maui 11 release next month will support Xcode 27 and the iOS 27 sdk.

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Answer 1

Nguyen Dam (WICLOUD CORPORATION) 595 Microsoft External Staff Moderator

Update (Sep 29): .NET 10 support for Xcode 27 has now been released. You can now update your .NET for iOS workload to use Xcode 27. Please note that Xcode 27.0 is required for this release.

The options below are now historical guidance; please refer to them only if you need to stay on the older workload.

Hello @Jermin Contractor , and thank you for your question.

~~At this time, there is no publicly announced timeline for stable .NET for iOS support for Xcode 27.~~ However, you can follow the Xcode 27.0 tracking issuefor updates on the current progress, or check out the .NET for iOS release list for the latest updates.

For your issue, there are two possible options:

Use Xcode 26.6 - which is the supported version for your current .NET for iOS workload.
Use the .NET 10 preview support for Xcode 27 - although please note that this is preview support and currently requires Xcode 27.0 Beta 6. For a stable and supported environment with your current workload, Xcode 26.6 is recommended.

If you found my response helpful or informative, I would greatly appreciate it if you could follow this guide for your confirmation. Thank you.

Jermin Contractor 25 Reputation points

2026-09-28T12:32:27.8466667+00:00

Hi, is there any new update on this that anyone is aware of. I am following the links that were provided, but there hasn't been any updates on them.
Bruce (SqlWork.com) 85,456 Reputation points

2026-09-28T14:35:56.29+00:00

Using Xcode 27 requires your code support iOS 27. There are many breaking changes, so besides updating the build chain, the Maui code needs updates. For example, the removal of appdelegate, will require your existing code to be modified before it will run on an Xcode 27 build.

if you use 3rd party nuget packages they may also need updates before your code will work with Xcode 27.

Note: my mobile app is written in swift, and there are more changes than expected. Enough that I creating Xcode 26 build pipeline.
Nguyen Dam (WICLOUD CORPORATION) 595 Reputation points Microsoft External Staff Moderator

2026-09-29T03:46:24.9433333+00:00

Hi @Jermin Contractor

.NET 10 support for Xcode 27 has been released just now! Please check out the latest release here: https://github.com/dotnet/macios/releases/tag/dotnet-10.0.1xx-xcode27.0-10722
Jermin Contractor 25 Reputation points

2026-09-30T07:17:16.67+00:00

Hey @Nguyen Dam (WICLOUD CORPORATION) , thanks a lot. This was very helpful. I updated the dotNet workload and I dont see compatibility issues any more. It did give me a couple of Storyboard issues which I was able to resolve. I was able to run the app on a real device directly as well as by creating an ipa file.