iOS Simulator crash: EXC_BAD_ACCESS SIGKILL Code Signature Invalid on Xcode 26.5 + macOS 26.5

Question

soykanozcelik OP

Created 6d

Replies 3

Boosts 0

Participants 2

i'am still getting crash while testing dotnetmaui my app, here is my environment info and crash report @shanselman

macOS Tahoe 26.5, macOS Rider 2026.1.2

dotnet workload list

Workload version: 10.0.300.3

Installed Workload Id Manifest Version Installation Source ios 26.5.10284/10.0.100 SDK 10.0.300 maccatalyst 26.5.10284/10.0.100 SDK 10.0.300 maui-android 10.0.20/10.0.100 SDK 10.0.300 maui-ios 10.0.20/10.0.100 SDK 10.0.300

xcodebuild -version Xcode 26.5 Build version 17F42

crash-report.txt

Answered by DTS Engineer in 890244022

That crash report most likely indicates that either your app, or some component of your app, is incorrectly signed [1]. Beyond that, it’s hard to say what’s going on. My first suggestion here is that you create a new test app using Xcode from the built-in iOS > App template. Can you get that working?

If so, you know Xcode is working correctly, which turns this into a question about your third-party tooling. And that’s not something I can help you with. It’s possible that someone else here might chime in but, if not, you should raise this via the support channel for those tools.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

[1] There’s also a possibility that it was incorrectly copied. See Updating Mac Software.

Answer 1

DTS Engineer OP

Apple

6d

Recommended

That crash report most likely indicates that either your app, or some component of your app, is incorrectly signed [1]. Beyond that, it’s hard to say what’s going on. My first suggestion here is that you create a new test app using Xcode from the built-in iOS > App template. Can you get that working?

If so, you know Xcode is working correctly, which turns this into a question about your third-party tooling. And that’s not something I can help you with. It’s possible that someone else here might chime in but, if not, you should raise this via the support channel for those tools.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

[1] There’s also a possibility that it was incorrectly copied. See Updating Mac Software.

Answer 2

soykanozcelik OP

4d

Thanks for the reply but i am not developing my app via Xcode as I mentioned above. I am using Rider 2026.1.2 and debug or release mode process success but when run/deploy to the simulator app crashing :/

i couldn't find where is the mistake or bug xcode, rider, simulator...

PS : app running with android emulator w/o error also apk test on physical device

Answer 3

DTS Engineer OP

Apple

2d

i am not developing my app via Xcode

Understood. But when you’re developing for iOS there’s no way to avoid the Xcode infrastructure, and I’m trying to distinguish between these two cases:

Your Xcode setup has a problem.
Your third-party tooling has a problem.

I can’t help you with the latter, but if the test I suggested up thread shows a problem with Xcode, I can help you with that.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"