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XCPreviewAgent crashes with KERN_PROTECTION_FAILURE on macOS 26.0.1 Tahoe
Hello, I'm experiencing consistent crashes of XCPreviewAgent when using Xcode Previews on macOS 26.0.1 Tahoe (25A362). Configuration: macOS: 26.0.1 (25A362) - stable release Xcode: 16.0 (23.0.54) - stable release Hardware: MacBook Pro M4 Project: SwiftUI iOS app Issue: Every time I try to use Xcode Previews, XCPreviewAgent crashes with: Exception Type: EXC_BAD_ACCESS (SIGBUS) Exception Subtype: KERN_PROTECTION_FAILURE at 0x0000000340e54000 Termination Reason: Namespace SIGNAL, Code 10, Bus error: 10 The crash occurs in shared memory region during dynamic library loading. What I've tried: Cleared all caches: rm -rf ~/Library/Developer/Xcode/DerivedData Deleted Preview data: rm -rf ~/Library/Developer/Xcode/UserData/Previews Reset simulators: xcrun simctl --set previews delete all Switched xcode-select to /Applications/Xcode.app/Contents/Developer Tried both Xcode stable and Xcode beta Created fresh simulators Clean build (Cmd+Shift+K) Rebooted Mac multiple times The app runs fine on simulator (Cmd+R), but Previews consistently crash.
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Oct ’25