Hi everyone,
After updating my Mac and Xcode to 26, I’m running into a consistent crash whenever I try to launch an app from Xcode.
Environment:
Mac: Apple Silicon M3
macOS: 26.0 (25A354)
Xcode: 26.0.1 (17A400)
Issue:
When I press Run on any project (including new, empty projects), Xcode immediately crashes.
This started only after updating to the latest macOS and Xcode.
Crash details:
The crash log shows:
Application Specific Signatures:
___localError
Thread 0 crashed inside -[IDEScheme _executionOperationForSchemeOperationParameters:...] from IDEFoundation/IDEKit.
I also noticed background threads calling DVTPortal (developer portal requests) right before the crash.
What I’ve tried so far:
Cleared DerivedData, ModuleCache.noindex, and Xcode caches.
Signed out/in of my Apple ID in Xcode.
Recreated project schemes.
Verified provisioning profiles.
Reinstalled Xcode 26.
Unfortunately, the crash still happens.
Question:
Is this a known issue with Xcode 26 on Apple Silicon (M3)?
Has anyone seen a workaround?
Any guidance would be greatly appreciated — I can’t currently launch apps in Xcode at all.
Thanks!
Topic:
Developer Tools & Services
SubTopic:
Xcode