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
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
1231577	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1231167	dotnet/runtime	WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution	#120953
1231119	dotnet/runtime	ComInterfaceGenerator.Tests.WorkItemExecution	#122534
1231102	dotnet/runtime	System.Web.HttpUtility.Tests.WorkItemExecution	#116193
1231066	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1231033	dotnet/runtime	threading_group2.WorkItemExecution
1231002	dotnet/runtime	ComInterfaceGenerator.Tests.WorkItemExecution	#122530
1230772	dotnet/runtime	ComInterfaceGenerator.Unit.Tests.WorkItemExecution
1230709	dotnet/runtime	Common.Tests.WorkItemExecution	#122526
1230654	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1230658	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1230639	dotnet/runtime	JIT.CodeGenBringUpTests_r.WorkItemExecution	#122513
1230548	dotnet/runtime	ComInterfaceGenerator.Tests.WorkItemExecution	#122012
1230214	dotnet/runtime	WasmTestOnChrome-ST-System.Diagnostics.Tracing.Tests.WorkItemExecution	#121412
1230327	dotnet/runtime	LibraryImportGenerator.Unit.Tests.WorkItemExecution	#122497
1230190	dotnet/runtime	Workloads-ST-Wasm.Build.Tests.IcuShardingTests.WorkItemExecution
1230040	dotnet/runtime	ComInterfaceGenerator.Tests.WorkItemExecution	#121513
1229754	dotnet/runtime	WasmTestOnChrome-ST-System.IO.Compression.ZipFile.Tests.WorkItemExecution	#122093
1229605	dotnet/runtime	IntrinsicsInSystemPrivateCoreLib.Tests.WorkItemExecution	#122490
1229334	dotnet/runtime	CoreMangLib.WorkItemExecution	#122407
1228926	dotnet/runtime	Common.Tests.WorkItemExecution	#122463
1228804	dotnet/runtime	System.IO.IsolatedStorage.Tests.WorkItemExecution
1228403	dotnet/runtime	ComInterfaceGenerator.Tests.WorkItemExecution	#122023
1228125	dotnet/runtime	System.Resources.Reader.Tests.WorkItemExecution	#122450
1227948	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1227935	dotnet/runtime	System.Runtime.Numerics.Tests.WorkItemExecution
1227687	dotnet/runtime	System.Net.WebProxy.Tests.WorkItemExecution	#122430
1227433	dotnet/runtime	System.Threading.Overlapped.Tests.WorkItemExecution	#122424
1227478	dotnet/runtime	JIT_ro.WorkItemExecution	#121513
1227469	dotnet/runtime	GC-features.WorkItemExecution	#122377
1227079	dotnet/runtime	System.Collections.Concurrent.Tests.WorkItemExecution
1226908	dotnet/runtime	IntrinsicsInSystemPrivateCoreLib.Tests.WorkItemExecution	#122399
1226710	dotnet/runtime	Workloads-ST-Wasm.Build.Tests.IcuShardingTests2.WorkItemExecution	#122375
1226534	dotnet/runtime	baseservices-exceptions.WorkItemExecution	#122386
1226452	dotnet/runtime	Wasm.Build.NativeRebuild.Tests.FlagsChangeRebuildTests.ExtraEmccFlagsSetButNoRealChange	#119575
1226339	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1225978	dotnet/runtime	Workloads-NoWebcil-ST-Wasm.Build.Tests.IcuShardingTests.WorkItemExecution	#122374
1225604	dotnet/runtime	baseservices-exceptions.WorkItemExecution	#122195
1225596	dotnet/runtime	Workloads-ST-Wasm.Build.Tests.Blazor.AppsettingsTests.WorkItemExecution	#122356
1225452	dotnet/runtime	baseservices.WorkItemExecution
1225368	dotnet/runtime	NoWebcil-ST-Wasm.Build.NativeRebuild.Tests.NoopNativeRebuildTest.WorkItemExecution	#122353
1225293	dotnet/runtime	System.Xml.XmlSerializer.ReflectionOnly.Tests.WorkItemExecution
1225167	dotnet/runtime	JIT_ro.WorkItemExecution	#121853
1224835	dotnet/runtime	NoWebcil-ST-Wasm.Build.Tests.IcuShardingTests2.WorkItemExecution	#115335
1224778	dotnet/runtime	NoWebcil-ST-Wasm.Build.NativeRebuild.Tests.ReferenceNewAssemblyRebuildTest.WorkItemExecution
1224677	dotnet/runtime	Invariant.Tests.WorkItemExecution	#122334
1224472	dotnet/runtime	Microsoft.Extensions.Configuration.Json.Tests.WorkItemExecution	#120823
1224127	dotnet/runtime	System.Xml.Linq.Events.Tests.WorkItemExecution	#122195
1221884	dotnet/runtime	NoWebcil-ST-Wasm.Build.Tests.Blazor.SimpleRunTests.WorkItemExecution	#122212
1223922	dotnet/runtime	JIT.CodeGenBringUpTests_ro.WorkItemExecution	#122296
1223696	dotnet/runtime	System.Net.Http.Functional.Tests.HttpClientHandlerTest_Http3.Public_Interop_ExactVersion_BufferContent_Success
1223692	dotnet/runtime	System.Xml.Linq.Misc.Tests.WorkItemExecution
1223582	dotnet/runtime	IcuAppLocal.Tests.WorkItemExecution
1223532	dotnet/runtime	Microsoft.Extensions.Options.ConfigurationExtensions.SourceGeneration.Tests.WorkItemExecution	#122160
1223380	dotnet/runtime	Microsoft.Extensions.DependencyModel.Tests.WorkItemExecution	#122276
1223348	dotnet/runtime	NoWebcil-ST-Wasm.Build.Tests.WasmRunOutOfAppBundleTests.WorkItemExecution	#122269
1223225	dotnet/runtime	System.Xml.Linq.xNodeReader.Tests.WorkItemExecution
1223212	dotnet/runtime	NoWebcil-ST-Wasm.Build.Tests.WasmTemplateTests.WorkItemExecution
1223096	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1223094	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1223042	dotnet/runtime	Workloads-ST-Wasm.Build.NativeRebuild.Tests.OptimizationFlagChangeTests.WorkItemExecution	#121853
1222836	dotnet/runtime	threading_group2.WorkItemExecution
1222812	dotnet/runtime	Workloads-ST-Wasm.Build.NativeRebuild.Tests.NoopNativeRebuildTest.WorkItemExecution	#122256
1222803	dotnet/runtime	WasmTestOnChrome-ST-System.Text.RegularExpressions.Tests.WorkItemExecution
1222720	dotnet/runtime	WasmTestOnChrome-ST-System.Runtime.Intrinsics.Tests.WorkItemExecution	#122258
1222690	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1222694	dotnet/runtime	System.Net.Http.Functional.Tests.HttpClientHandlerTest_Http3.Public_Interop_ExactVersion_BufferContent_Success
1222674	dotnet/runtime	ComInterfaceGenerator.Tests.WorkItemExecution
1222664	dotnet/runtime	Workloads-ST-Wasm.Build.Tests.Blazor.AppsettingsTests.WorkItemExecution
1222622	dotnet/runtime	Workloads-ST-Wasm.Build.Tests.Blazor.DllImportTests.WorkItemExecution	#122258
1222598	dotnet/runtime	Workloads-ST-Wasm.Build.Tests.Blazor.DllImportTests.WorkItemExecution	#121694
1222595	dotnet/runtime	NoWebcil-ST-Wasm.Build.Tests.Blazor.NoopNativeRebuildTest.WorkItemExecution	#121656
1222457	dotnet/runtime	Wasm.Build.NativeRebuild.Tests.FlagsChangeRebuildTests.ExtraEmccFlagsSetButNoRealChange	#121614
Displaying 100 of 227 results

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
4	50	227

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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