Unable to pull image from mcr.microsoft.com

[jozkee]

Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1108670
Build error leg or test failing:

Error Message

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": "Unable to pull image mcr.microsoft.com/dotnet-buildtools/prereqs",
  "BuildRetry": true,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1108670
Result validation: ⚠️ Validation could not be done without an Azure DevOps build URL on the issue. Please add it to the "Build: 🔎" line.
Validation performed at: 8/1/2025 8:10:46 AM UTC

Report

Build	Definition	Test	Pull Request
1241982	dotnet/runtime	System.Runtime.Numerics.Tests.WorkItemExecution
1241811	dotnet/runtime	NoWorkload-ST-Wasm.Build.Tests.WorkItemExecution
1241731	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1241737	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1241703	dotnet/runtime	jit64_3.WorkItemExecution
1241514	dotnet/runtime	Directed_2.WorkItemExecution
1241334	dotnet/runtime	threading_group1.WorkItemExecution	#122798
1241268	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1241267	dotnet/runtime	System.Xml.Linq.TreeManipulation.Tests.WorkItemExecution
1241197	dotnet/runtime	ComInterfaceGenerator.Tests.WorkItemExecution	#122794
1241059	dotnet/runtime	IcuAppLocal.Tests.WorkItemExecution
1241016	dotnet/runtime	baseservices.WorkItemExecution	#122789
1240800	dotnet/runtime	System.Runtime.Numerics.Tests.WorkItemExecution
1240814	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1240697	dotnet/runtime	ComInterfaceGenerator.Unit.Tests.WorkItemExecution	#122769
1240638	dotnet/runtime	threading_group2.WorkItemExecution	#122780
1240308	dotnet/runtime	MetricOuterLoop1.Tests.WorkItemExecution	#122761
1240262	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1240011	dotnet/runtime	baseservices-exceptions.WorkItemExecution	#120688
1239990	dotnet/runtime	Interop/SuppressGCTransition/SuppressGCTransitionTest/SuppressGCTransitionTest.cmd
1239991	dotnet/runtime	WasmTestOnChrome-ST-System.Linq.Tests.WorkItemExecution	#122749
1239894	dotnet/runtime	WasmTestOnChrome-ST-System.Runtime.Intrinsics.Tests.WorkItemExecution	#122749
1239849	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1239790	dotnet/runtime	NoWebcil-ST-Wasm.Build.Tests.IcuShardingTests.WorkItemExecution
1239712	dotnet/runtime	LoaderClassloaderGenerics.WorkItemExecution
1239664	dotnet/runtime	JIT.CodeGenBringUpTests_ro.WorkItemExecution
1239606	dotnet/runtime	ComInterfaceGenerator.Tests.WorkItemExecution	#122753
1239594	dotnet/runtime	System.Runtime.Numerics.Tests.WorkItemExecution
1239588	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1239268	dotnet/runtime	System.Runtime.Numerics.Tests.WorkItemExecution
1239257	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1239229	dotnet/runtime	JIT.Generics.WorkItemExecution
1239187	dotnet/runtime	Microsoft.VisualBasic.Core.Tests.WorkItemExecution	#122733
1239036	dotnet/runtime	threading_group1.WorkItemExecution
1238963	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1238873	dotnet/runtime	Regression_2.WorkItemExecution
1238858	dotnet/runtime	ComInterfaceGenerator.Tests.WorkItemExecution	#122727
1238774	dotnet/runtime	ComInterfaceGenerator.Unit.Tests.WorkItemExecution	#122722
1238728	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1238669	dotnet/runtime	ComInterfaceGenerator.Tests.WorkItemExecution
1238660	dotnet/runtime	ComInterfaceGenerator.Tests.WorkItemExecution	#122723
1238600	dotnet/runtime	ComInterfaceGenerator.Tests.WorkItemExecution	#122722
1238434	dotnet/runtime	JIT_r.WorkItemExecution	#122646
1238243	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1238149	dotnet/runtime	ComInterfaceGenerator.Tests.WorkItemExecution	#122714
1238090	dotnet/runtime	NoWebcil-ST-Wasm.Build.NativeRebuild.Tests.SimpleSourceChangeRebuildTest.WorkItemExecution	#122706
1238022	dotnet/runtime	tracing/runtimeeventsource/nativeruntimeeventsource/nativeruntimeeventsource.cmd
1237821	dotnet/runtime	NoWebcil-ST-Wasm.Build.Tests.WorkItemExecution	#122643
1237616	dotnet/runtime	System.Net.Sockets.Tests.SendTo_Task.Datagram_UDP_ShouldImplicitlyBindLocalEndpoint	#122556
1237591	dotnet/runtime	System.Xml.Linq.SDMSample.Tests.WorkItemExecution
1237553	dotnet/runtime	WasmTestOnChrome-ST-System.IO.Compression.ZipFile.Tests.WorkItemExecution	#122093
1237472	dotnet/runtime	LibraryImportGenerator.Tests.WorkItemExecution	#122012
1237407	dotnet/runtime	Workloads-ST-Wasm.Build.Tests.LazyLoadingTests.WorkItemExecution	#122698
1237359	dotnet/runtime	ComInterfaceGenerator.Tests.WorkItemExecution	#122695
1237283	dotnet/runtime	threading_group1.WorkItemExecution	#122639
1237244	dotnet/runtime	System.Xml.XmlSerializer.ReflectionOnly.Tests.WorkItemExecution	#122683
1237232	dotnet/runtime	JIT_ro.WorkItemExecution	#122023
1237210	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1237160	dotnet/runtime	LibraryImportGenerator.Unit.Tests.WorkItemExecution	#122682
1237106	dotnet/runtime	Microsoft.Extensions.FileProviders.Physical.Tests.WorkItemExecution
1237099	dotnet/runtime	threading_group1.WorkItemExecution
1237042	dotnet/runtime	ComInterfaceGenerator.Tests.WorkItemExecution	#122534
2864701	dotnet-runtime	NoWebcil-ST-Wasm.Build.Tests.FilesToIncludeInFileSystemTests.WorkItemExecution
1237018	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1237024	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1237005	dotnet/runtime	Common.Tests.WorkItemExecution
1237000	dotnet/runtime	jit64_5.WorkItemExecution
1236206	dotnet/runtime	System.Runtime.Numerics.Tests.WorkItemExecution
1236207	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1236123	dotnet/runtime	Workloads-ST-Wasm.Build.Tests.PInvokeTableGeneratorTests.WorkItemExecution
1235782	dotnet/runtime	Microsoft.Extensions.FileProviders.Physical.Tests.WorkItemExecution
1235547	dotnet/runtime	System.Net.Sockets.Tests.SendTo_Task.Datagram_UDP_ShouldImplicitlyBindLocalEndpoint	#122556
1235464	dotnet/runtime	ComInterfaceGenerator.Tests.WorkItemExecution	#122561
1235102	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1234948	dotnet/runtime	ComInterfaceGenerator.Tests.WorkItemExecution	#118874
1234549	dotnet/runtime	System.Runtime.Loader.RefEmitLoadContext.Tests.WorkItemExecution
1234535	dotnet/runtime	NoWorkload-ST-Wasm.Build.Tests.WorkItemExecution	#122607
1234349	dotnet/runtime	NoWebcil-ST-Wasm.Build.Tests.WasmTemplateTests.WorkItemExecution	#122607
1234111	dotnet/runtime	Microsoft.Extensions.Configuration.Binder.SourceGeneration.Tests.WorkItemExecution	#119575
1234081	dotnet/runtime	WasmTestOnChrome-ST-System.Globalization.Tests.WorkItemExecution	#121412
1234076	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1234077	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1233911	dotnet/runtime	WasmTestOnChrome-ST-Microsoft.Bcl.Memory.Tests.WorkItemExecution	#122227
1233874	dotnet/runtime	Microsoft.Extensions.Configuration.UserSecrets.Tests.WorkItemExecution	#122526
1233868	dotnet/runtime	JSImportGenerator.Unit.Tests.WorkItemExecution	#122573
1233831	dotnet/runtime	ComInterfaceGenerator.Tests.WorkItemExecution	#122425
1233310	dotnet/runtime	Workloads-ST-Wasm.Build.Tests.InvariantGlobalizationTests.WorkItemExecution	#122574
1233119	dotnet/runtime	GC-simulator.WorkItemExecution	#121305
1233088	dotnet/runtime	NoWebcil-ST-Wasm.Build.NativeRebuild.Tests.NoopNativeRebuildTest.WorkItemExecution	#119575
1232932	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1232754	dotnet/runtime	Microsoft.Extensions.Configuration.Binder.SourceGeneration.Tests.WorkItemExecution	#122526
1232664	dotnet/runtime	Microsoft.Extensions.Configuration.FileExtensions.Tests.WorkItemExecution	#122333
1232573	dotnet/runtime	normal-System.Composition.Tests.WorkItemExecution	#122089
1232463	dotnet/runtime	LibraryImportGenerator.Unit.Tests.WorkItemExecution	#122537
1232262	dotnet/runtime	Invariant.Tests.WorkItemExecution
1232178	dotnet/runtime	threading_group1.WorkItemExecution	#122530
1232067	dotnet/runtime	WasmTestOnChrome-ST-Microsoft.Extensions.DependencyInjection.Tests.WorkItemExecution	#121513
1231806	dotnet/runtime	WasmTestOnFirefox-ST-System.Xml.Linq.xNodeBuilder.Tests.WorkItemExecution	#122495
1231752	dotnet/runtime	System.IO.FileSystem.Tests.WorkItemExecution	#122526
1231682	dotnet/runtime	System.Threading.Overlapped.Tests.WorkItemExecution	#122555
Displaying 100 of 197 results

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
2	29	197

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[jozkee]

This is from a preview6 run from Jun 20th, it might've been fixed in main already.

[lewing]

@akoeplinger do we know what is causing these in general?

[akoeplinger]

hm no, this looks like an infrastructure/dnceng issue to me

[AndriySvyryd]

We are hitting a similar one: Unable to pull image mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-22.04-helix-sqlserver-amd64 in efcore
https://dev.azure.com/dnceng-public/public/_build/results?buildId=1106421&view=logs&j=f95328f7-07f5-5106-5c2a-5dc7069f305c&t=e2f3026d-346a-509b-3549-57236476a9cb
https://dev.azure.com/dnceng-public/public/_build/results?buildId=1108065&view=logs&j=f95328f7-07f5-5106-5c2a-5dc7069f305c&t=e2f3026d-346a-509b-3549-57236476a9cb