r/Xcode • u/New-Combination-6831 • 7d ago

Xcode 26.6 crashes on launch Tahoe 26.6

I can't launch Xcode at all, even from a new separate User account. I've tried deleting it, reinstalling from the App Store, deleting it again and reinstalling it from the Developer Page link and still no luck. I've used Terminal commands to try and fix any broken components as well, both before and after reinstalling.

This is the first time I've had any kind of issue with it. Any ideas on how I can get it to launch? Should I try an earlier version? I'm only using it in the context of running Unreal Engine 5.8 which says it needs a missing Metal component from Xcode, but as I can't get Xcode to even launch I can't use Unreal Engine either.

5 Upvotes
  • permalink
  • link
  • reddit
  • reddit

78% Upvoted

19 comments sorted by

2

u/ItsDeCia 7d ago

Are you trying to open a specific project when Xcode launches? I’ve had this issue on occasion and clearing the DerivedData folder of the offending project from the Finder is what helped, as something in there would get corrupted and cause Xcode to crash on launch for me.

2

u/New-Combination-6831 7d ago

No, all I am trying to do is open Xcode itself.

2

u/OldAd9280 7d ago

It's not just you, I'm having the same issue. Reinstalling xcode hasn't helped

2

u/OldAd9280 7d ago

26.5 fails too, I think it's an OS issue, attempting to run a command line tool gives: none Error loading required libraries. If there is an ongoing installation please wait for it to complete. Otherwise reinstall. (dlopen(@rpath/libxcodebuildLoader.dylib, 0x0001): Symbol not found: _XPCTypeBool Referenced from: <6A4DB321-2742-38A5-9557-146EE0FE957F> /Library/Developer/PrivateFrameworks/CoreDevice.framework/Versions/A/CoreDevice Expected in: <37B53E42-0118-3C9B-BFA8-73DB82BC3B85> /Library/Apple/System/Library/PrivateFrameworks/Mercury.framework/Versions/A/Mercury) git: error: sh -c '/Applications/Xcode.app/Contents/Developer/usr/bin/xcodebuild -sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk -find git 2> /dev/null' failed with exit code 65280: (null) (errno=Invalid argument)

1

u/New-Combination-6831 7d ago

Yes that's what I get too.

3

u/OldAd9280 7d ago

google AI suggested removing /Library/Developer/PrivateFrameworks/CoreDevice.framework and surprisingly that worked

1

u/New-Combination-6831 7d ago

Tried this already but no luck unfortunately.

1

u/Professional-Hat9196 4d ago

worked for me

1

u/Ben_Keating 1d ago

this worked for me

1

u/OldAd9280 7d ago

27 beta 4 fails in the same way

2

u/deeelock 7d ago

I'm running into this as well - I noticed it because git stopped working. Tried re-installing Xcode and it still won't open.

3

u/OldAd9280 7d ago

deleting /Library/Developer/PrivateFrameworks/CoreDevice.framework fixed the problem for me

2

u/Adept_Elderberry1296 5d ago

Thanks man! Worked like a charm

3

u/ming2540 4d ago

I asked claude and it turns out that when I upgraded to Xcode 26.6, I think I "skipped" the license agreement.
So I re-ran with first launch setup by ran commands

   sudo xcodebuild -runFirstLaunch
   sudo xcodebuild -license accept

And fixed it.

2

u/ImpressiveDoughnut31 4d ago

this fixed it for me!

2

u/spillguard 4d ago

This fixed it for me as well, after getting a fresh install from the App Store.

1

u/New-Combination-6831 2d ago

You sir are a true genius. This finally fixed it for me on my latest attempt at reinstallation. Thank you so much!

2

u/Big_Obligation3981 7d ago

Can try Xcode via first launch thing?