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
1404356	dotnet/runtime	tracing.WorkItemExecution	#127621
1404093	dotnet/runtime	LoaderClassloaderGenerics.WorkItemExecution
1404028	dotnet/runtime	WasmTestOnChrome-MONO-ST-Microsoft.Extensions.Diagnostics.Tests.WorkItemExecution	#127613
1403933	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.IO.FileSystem.Primitives.Tests.WorkItemExecution	#125437
1403852	dotnet/runtime	System.Net.Http.Unit.Tests.WorkItemExecution	#127520
1403763	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-6.WorkItemExecution	#127419
1403745	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-6.WorkItemExecution	#126904
1403828	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Runtime.InteropServices.JavaScript.Tests.WorkItemExecution	#127604
1403741	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-7.WorkItemExecution	#127431
1403608	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-6.WorkItemExecution	#127596
1403265	dotnet/runtime	Microsoft.Extensions.Options.SourceGeneration.Unit.Tests.WorkItemExecution
1403218	dotnet/runtime	tracing.WorkItemExecution	#126932
1402968	dotnet/runtime	System.Net.ServerSentEvents.Tests.WorkItemExecution
1402808	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Runtime.Intrinsics.Tests.WorkItemExecution	#127585
1402323	dotnet/runtime	Methodical_do.WorkItemExecution	#127438
1402053	dotnet/runtime	System.Reflection.DispatchProxy.Tests.WorkItemExecution	#127228
1401949	dotnet/runtime	System.Threading.Tasks.Parallel.Tests.WorkItemExecution	#127497
1401944	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.ServiceModel.Syndication.Tests.WorkItemExecution	#127559
1401865	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.Threading.Thread.Tests.WorkItemExecution	#126841
1401719	dotnet/runtime	System.Runtime.Numerics.Tests.WorkItemExecution
1401620	dotnet/runtime	WBT-NoWebcil-MONO-ST-Wasm.Build.Tests.WorkItemExecution	#127552
1401534	dotnet/runtime	GC/API/GC/Collect_Aggressive_LargePages/Collect_Aggressive_LargePages.cmd
1401460	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-17.WorkItemExecution	#125367
1401234	dotnet/runtime	ComInterfaceGenerator.Unit.Tests.WorkItemExecution	#127542
1400774	dotnet/runtime	JIT/opt/Casts/shared_Casts/shared_Casts.dll
1400742	dotnet/runtime	System.Runtime.Serialization.Xml.ReflectionOnly.Tests.WorkItemExecution	#127492
1400776	dotnet/runtime	System.Formats.Nrbf.Tests.WorkItemExecution
1400614	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Runtime.ReflectionInvokeEmit.Tests.WorkItemExecution	#126549
1400660	dotnet/runtime	WasmTestOnV8-CLR-ST-System.Threading.Tasks.Tests.WorkItemExecution	#127483
1400072	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch--1.WorkItemExecution	#127228
1400150	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-6.WorkItemExecution	#126360
1400140	dotnet/runtime	System.Formats.Nrbf.Tests.WorkItemExecution	#127060
1399780	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1399567	dotnet/runtime	JIT_others.WorkItemExecution	#127267
1399221	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-18.WorkItemExecution	#127489
1399159	dotnet/runtime	Wasi.Build.Tests.WasiTemplateTests.ConsolePublishAndRunForSingleFileBundle	#126004
1399024	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Xml.Linq.xNodeBuilder.Tests.WorkItemExecution	#125554
1398965	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Threading.Tests.WorkItemExecution	#127418
1399011	dotnet/runtime	Wasm.Build.Tests.DebugLevelTests.PublishWithExplicitValue	#127483
1398936	dotnet/runtime	System.Linq.Parallel.Tests.WorkItemExecution	#127477
1398971	dotnet/runtime	Regression_4.WorkItemExecution	#127450
1398755	dotnet/runtime	System.Net.WebHeaderCollection.Tests.WorkItemExecution	#126765
1398754	dotnet/runtime	System.IO.Hashing.Tests.WorkItemExecution
1398495	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#126905
1398475	dotnet/runtime	System.Net.WebSockets.Tests.WorkItemExecution	#127328
1398357	dotnet/runtime	WBT-Workloads-MONO-ST-Wasm.Build.Tests.InvariantGlobalizationTests.WorkItemExecution	#125437
1392159	dotnet/runtime	WasmTestOnV8-CLR-ST-System.Threading.Tasks.Tests.WorkItemExecution	#127302
1397979	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-0.WorkItemExecution	#127450
1397946	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch--1.WorkItemExecution	#127451
1397708	dotnet/runtime	_covariant_return_covariant_returns::AsyncMicro.Program.TestPrRepro()
1389872	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Console.Manual.Tests.WorkItemExecution	#127060
1397476	dotnet/runtime	Microsoft.Extensions.Http.Tests.WorkItemExecution	#127133
1397398	dotnet/runtime	Workloads-NoWebcil-ST-Wasm.Build.Tests.WasmBuildAppTest.WorkItemExecution	#127442
1397369	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-17.WorkItemExecution	#127258
1397327	dotnet/runtime	_covariant_return_covariant_returns::AsyncMicro.Program.TestPrRepro()	#127438
1397280	dotnet/runtime	System.Linq.Tests.WorkItemExecution
1397274	dotnet/runtime	WasmTestOnV8-CLR-ST-System.Threading.Tests.WorkItemExecution	#127438
1397255	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Runtime.Intrinsics.Tests.WorkItemExecution	#127429
1397237	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Threading.Tests.WorkItemExecution	#127425
1397183	dotnet/runtime	System.Resources.Reader.Tests.WorkItemExecution	#127433
1396979	dotnet/runtime	jit64_5.WorkItemExecution
1396970	dotnet/runtime	WBT-NoWorkload-CLR-ST-Wasm.Build.Tests.LazyLoadingTests.WorkItemExecution
1396899	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-7.WorkItemExecution	#127256
1396878	dotnet/runtime	MetricOuterLoop1.Tests.WorkItemExecution	#127429
1396680	dotnet/runtime	System.Runtime.Intrinsics.Tests.Vectors.Vector512Tests.ConvertToInt32Test
1396650	dotnet/runtime	System.Text.Encodings.Web.Tests.WorkItemExecution	#127427
1396611	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.Private.Uri.Functional.Tests.WorkItemExecution	#126845
1396587	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Runtime.Loader.Tests.WorkItemExecution	#127112
1396531	dotnet/runtime	System.Net.WebSockets.Client.Tests.WorkItemExecution	#127336
1396468	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1396420	dotnet/runtime	System.Runtime.Handles.Tests.WorkItemExecution	#127392
1396401	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Runtime.Tests.WorkItemExecution	#127418
1396411	dotnet/runtime	System.Text.Json.Tests.WorkItemExecution
1396242	dotnet/runtime	Workloads-NoWebcil-Wasm.Build.Tests.TestAppScenarios.WasmAppBuilderDebugLevelTests.WorkItemExecution	#126004
1396205	dotnet/runtime	System.Numerics.Tensors.Tests.WorkItemExecution	#127327
1396191	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Globalization.Tests.WorkItemExecution	#127409
1396160	dotnet/runtime	JIT.CodeGenBringUpTests_do.WorkItemExecution
1395997	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Xml.Linq.TreeManipulation.Tests.WorkItemExecution	#127394
1395974	dotnet/runtime	System.Threading.Tasks.Tests.WorkItemExecution	#127410
1395977	dotnet/runtime	System.Text.Json.Tests.WorkItemExecution	#127411
1396034	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Runtime.Tests.WorkItemExecution	#127336
1395917	dotnet/runtime	System.Net.Http.Functional.Tests.WorkItemExecution	#127400
1395859	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.ComponentModel.EventBasedAsync.Tests.WorkItemExecution	#127262
1395757	dotnet/runtime	System.Xml.Linq.Events.Tests.WorkItemExecution	#127225
1395830	dotnet/runtime	System.Dynamic.Runtime.Tests.WorkItemExecution	#127403
1395705	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.IO.Packaging.Tests.WorkItemExecution
1395525	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Threading.Thread.Tests.WorkItemExecution	#127328
1395474	dotnet/runtime	JIT_others.MergedTestAssembly.0.1.WorkItemExecution	#127229
1395393	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.IO.FileSystem.Manual.Tests.WorkItemExecution	#126385
1395196	dotnet/runtime	System.Threading.Tasks.Dataflow.Tests.WorkItemExecution	#125650
1394750	dotnet/runtime	System.Net.ServicePoint.Tests.WorkItemExecution	#126150
1394804	dotnet/runtime	System.Runtime.Numerics.Tests.WorkItemExecution
1394693	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch--3.WorkItemExecution	#127371
1394684	dotnet/runtime	System.ObjectModel.Tests.WorkItemExecution	#127280
1394540	dotnet/runtime	System.Reflection.Emit.ILGeneration.Tests.WorkItemExecution
1392602	dotnet/runtime	System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation	#125835
1394395	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-7.WorkItemExecution	#126782
1394323	dotnet/runtime	System.IO.Tests.WorkItemExecution	#127295
1394270	dotnet/runtime	chrome-DebuggerTests.SetNextIpTests.WorkItemExecution	#126341
1394135	dotnet/runtime	System.Collections.Tests.WorkItemExecution	#127293
Displaying 100 of 575 results

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
13	101	575

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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