Xcode 27 Documentation download fails: MAQueryTooManyResults

Developer Tools & Services Xcode
kelin OP
Created 2d
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Xcode 27 keeps failing to download the Documentation, it shows "Preparing to download" and spins the camomile endlessly.

I checked logs (with help of AI) and found this:

  • Xcode queries com.apple.MobileAsset.AppleDeveloperDocumentation.
  • Metadata catalog loading suceeds.
  • Then asset resolution loops with: MAQueryTooManyResults - Asset load result ... 13 (MAQueryTooManyResults)
  • Also CSSMERR_CSP_VERIFY_FAILED from mobileassetd during this sequence.

In my /System/Library/AssetsV2 I have 3 old .asset files all from Xcode 26, the last one updated on Jun 12. But I don't think it's the reason for the error.

What would you suggest to recover the documentation?

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Xcode 27 Documentation download fails: MAQueryTooManyResults
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