Unable to download Metal toolchain with Xcode Beta 5

Question

featherless OP

Created 4w

Replies 20

Boosts 16

Participants 22

I'm unable to download the Metal toolchain with Xcode. When trying to do it via the command line, I get the following:

> xcodebuild -downloadComponent metalToolchain -exportPath /tmp/MyMetalExport/
Beginning asset download...
2025-08-06 19:46:19.983 xcodebuild[1395:22024] Writing error result bundle to /var/folders/48/1k1jfsxn56zcs4qr_719rc1w0000gn/T/ResultBundle_2025-06-08_19-46-0019.xcresult
xcodebuild: error: Failed fetching catalog for assetType (com.apple.MobileAsset.MetalToolchain), serverParameters ({
    RequestedBuild = 17A5295f;
})

From Console.app:

DVTDownloadsFetchAssetCatalog() complete assetType (com.apple.MobileAsset.MetalToolchain), options: (MADownloadOptions allowsCellular: 0 resourceTimeout: 60 canUseCacheServer: 0 discretionary: 0 disableUI: 0 sessionId: (null) additionalServerParams:{ RequestedBuild = 17A5295f; } allowsExpensiveAccess:1 requiresPowerPluggedIn: 0 prefersInfraWiFi: 1 liveServerOnly: -1 DownloadAuthorizationHeader: not present analyticsData: not present allowDaemonConnectionRetries: 0), result: (59), catalogError: (Download failed due to not being able to find the host. (Catalog download for com.apple.MobileAsset.MetalToolchain))

Note that I am online. I've tried restarting my computer and Xcode and using a different network.

Answered by Engineer in 852698022

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

Boost

Answer 1

drunknbass_ccg OP

4w

please fix this. this is blocking development

5

Answer 2

liujl OP

4w

I'm faced with exact same error, reinstalled Xcode but still failed, any workaround?

0

Answer 3

liquidsmoke OP

4w

Same problem here, and i dont see where i can manually download it.

0

Answer 4

bunuelcubosoto OP

4w

Same here…

0

Answer 5

dodongbogart OP

4w

I also experienced this today when I updated to the latest Xcode 26 beta

0

Answer 6

jordi OP

4w

same here

FB19433159

0

Answer 7

J0hn OP

4w

Same problem

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

0

Answer 8

ptsochantaris OP

4w

Same :(

0

Answer 9

Engineer OP

Apple

4w

Accepted Answer

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

0

Answer 10

Vikas_Andor OP

3w

Screenshot 2025-08-08 at 4.26.03 PM.png

Facing same

1

Answer 11

m4rr OP

3w

same

1

Answer 12

RomanMishchenko OP

3w

Same :(

0

Answer 13

drunknbass_ccg OP

3w

negative ghostrider

xcodebuild -downloadComponent metalToolchain - error

0

Answer 14

dodongbogart OP

3w

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

0

Answer 15

DTS Engineer OP

Apple

3w

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