"IL Trimmer has encountered an unexpected error" while deploying iOS MAUI app

[Indyy66]

Description

This issue is with VS2026 preview version Insiders [11116.177]. When I try to deploy iOS versions of the .NET Maui application, I receive the following errors. I have tried to use this with iPhone 17 26.0, iPhone 16 iOS Pro Max 18.6, iPhone 16 iOS Pro 18.6, and iPhone 16 iOS Plus 18.6.

IL Trimmer has encountered an unexpected error. Please report the issue at https://aka.ms/report-illink

MessagingRemoteException: An error occurred on client Build2609752 while executing a reply for topic xvs/build/26.0.9752/execute-task/MauiKit/b1b110d002fAOTCompile
MessagingException: Could not find file '/Users/Administrator/Library/Caches/maui/PairToMac/Builds/MauiKit/b1b110de5f352559ffd435bdf3d99faf8ea2064e0faa02a62389bfcf9d90b86d/obj/Debug/net9.0-ios/iossimulator-x64/linked/System.Private.CoreLib.dll'.

I am properly connected to my MacBook, and I don't experience this issue with VS2022.

Reproduction Steps

Create a new application and try to run it on any iOS simulator.

Expected behavior

The build should deploy and launch the application on the mentioned simulators.

Actual behavior

It fails to launch with stated errors.

Regression?

No response

Known Workarounds

No response

Configuration

No response

Other information

No response

[MihuBot]

I'm a bot. Here are possible related and/or duplicate issues (I may be wrong):

• https://github.com/dotnet/runtime/issues/117604
• [area-Tools-ILLink]: IL Trimmer has encountered an unexpected error. Please report the issue at https://aka.ms/report-illink runtime#119495

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[vitek-karas]

@rolfbjarne

[agocke]

@sbomer

[rolfbjarne]

@Indyy66 can you get an MSBuild binlog?

[dotnet-policy-service]

Hi @@Indyy66. We have added the "need-info" label to this issue, which indicates that we have an open question for you before we can take further action. This issue will be closed automatically in 7 days if we do not hear back from you by then - please feel free to re-open it if you come back to this issue after that time.