Xcode Beta 5 Metal toolchain download issue

same issue here, beta5 is unusable for me

Is there any solution for this.

I have the same issue.

Same for us we cannot use beta5. Were unable to build the app without being able to download MetalToolchain

Same issue here. I'm unable to do anything with beta 5.

Failed fetching catalog for assetType (com.apple.MobileAsset.MetalToolchain), serverParameters ({
    RequestedBuild = 17A5295f;
})
Domain: DVTDownloadsUtilitiesErrorDomain
Code: -1
User Info: {
    DVTErrorCreationDateKey = "2025-08-07 13:49:59 +0000";
}
--
Failed fetching catalog for assetType (com.apple.MobileAsset.MetalToolchain), serverParameters ({
    RequestedBuild = 17A5295f;
})
Domain: DVTDownloadsUtilitiesErrorDomain
Code: -1
--
Download failed due to not being able to find the host. (Catalog download for com.apple.MobileAsset.MetalToolchain)
Domain: com.apple.MobileAssetError.Download
Code: 59
User Info: {
    checkConfiguration = 1;
}
--


System Information

macOS Version 15.5 (Build 24F74)
Xcode 26.0 (24198.5) (Build 17A5295f)
Timestamp: 2025-08-07T15:49:59+02:00

This fails regardless of which Xcode bundle you select (Universal / Apple Silicon). It also fails for Mac OS 15.6 and Mac OS 26 Beta 5.

I've found no work around for this and no CLI option to get past this either.

This is a blocking issue for anyone with Metal in their App.

Please advise.

Also fails for me on macOS 15.6, but downloads fine in Xcode Beta 5 running on macOS 26 Beta 5. Doesn't help everyone but still it's something.

This issue has been resolved, relaunching Xcode will apply it.

It works for me after relaunching Xcode 26 beta 5. I tried it in Settings -> Components.

The problem is still occurring for me.

Did anyone figure it out? The accepted answer didn't work.

Upgrade mac os to beta 6 it is resolved. Seems like beta 5 issue

For folks that are continuing to experience this issue with getting the Metal toolchain, I have something I'd like you to try in Terminal, listed below. Please quit Xcode first, and then relaunch it after running those commands. Please let me know if this resolves the issue for you!

sudo defaults delete com.apple.MobileAsset MobileAssetAssetAudience-com.apple.MobileAsset.MetalToolchain
xcodebuild -downloadComponent metalToolchain

— Ed Ford,  DTS Engineer

didn't work. I'm still getting the same error

Thanks for letting us know. There are a few different threads regarding this on the forums, so I'd like to consolidate this thread with a different one to help us figure out this issue. We have a request for further information over on a different thread that we'd appreciate people trying and letting us know the results of by replying to that thread.

— Ed Ford,  DTS Engineer

We have an additional defaults that may need to be deleted to help resolve the issue. Please try deleting the following defaults, if they exist:

sudo defaults delete com.apple.MobileAsset EnableLiveAssetServerV2-com.apple.MobileAsset.MetalToolchain
sudo defaults delete com.apple.MobileAsset PallasUrlOverrideV2-com.apple.MobileAsset.MetalToolchain
sudo defaults delete com.apple.MobileAsset MobileAssetAssetAudience-com.apple.MobileAsset.MetalToolchain

and then try to download:

xcodebuild -downloadComponent metalToolchain