Can't install Metal Toolchain component

Question

ivan.mobisystems OP

Created 2w

Replies 6

Boosts 16

Participants 10

With Xcode 26.0 beta 5 (17A5295f) when I run the following command

xcodebuild -downloadComponent metalToolchain

I get the following error:

xcodebuild[48851:12478851] Writing error result bundle to /var/folders/b_/g67r_tl557z244g20ncr_qmsd9wrz1/T/ResultBundle_2025-07-08_11-10-0012.xcresult
xcodebuild: error: Failed fetching catalog for assetType (com.apple.MobileAsset.MetalToolchain), serverParameters ({
    RequestedBuild = 17A5295f;
})

I can't install the toolchain from the Xcode GUI also. Does someone know a workaround ?

Answered by Engineer in 852699022

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

Boost

Answer 1

stanimir_mobisystems OP

2w

I am having the same issue when trying to download Metal Toolchain. Here is the info which Xcode shows after getting the error:

Failed fetching catalog for assetType (com.apple.MobileAsset.MetalToolchain), serverParameters ({
    RequestedBuild = 17A5295f;
})
Domain: DVTDownloadsUtilitiesErrorDomain
Code: -1
User Info: {
    DVTErrorCreationDateKey = "2025-08-07 10:56:28 +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 15.6 (Build 24G84)
Xcode 26.0 (24198.5) (Build 17A5295f)
Timestamp: 2025-08-07T13:56:28+03:00

0

Answer 2

J0hn OP

2w

Yup. Another Beta with metal toolchain issues:

Failed fetching catalog for assetType (com.apple.MobileAsset.MetalToolchain), serverParameters ({
    RequestedBuild = 17A5295f;
})

1

Answer 3

mpdifran OP

2w

Yup, having the same problem.

0

Answer 4

Engineer OP

Apple

2w

Accepted Answer

Recommended

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

1

Answer 5

DTS Engineer OP

Apple

1w

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

0

Answer 6

DTS Engineer OP

Apple

1w

Still can't download the toolchain.

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

0