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
1385661	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Net.Http.Functional.Tests.WorkItemExecution	#127022
1385638	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Runtime.InteropServices.JavaScript.Tests.WorkItemExecution	#127111
1385626	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.Memory.Tests.WorkItemExecution	#126309
1385619	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.Net.Http.Enterprise.Tests.WorkItemExecution
1385563	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-8.WorkItemExecution	#126975
1385620	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Threading.Tasks.Tests.WorkItemExecution	#127109
1385500	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Runtime.Tests.WorkItemExecution	#126277
1385492	dotnet/runtime	System.Text.Json.Tests.WorkItemExecution	#125596
1385464	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.Xml.Linq.Events.Tests.WorkItemExecution	#127108
1385434	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Runtime.Loader.RefEmitLoadContext.Tests.WorkItemExecution	#127088
1385422	dotnet/runtime	System.Numerics.Tensors.Tests.HalfGenericTensorPrimitives.SpanDestinationFunctions_SpecialValues	#126309
1385393	dotnet/runtime	Regression_5.WorkItemExecution	#125129
1385372	dotnet/runtime	Microsoft.Bcl.Cryptography.Tests.WorkItemExecution	#127106
1385292	dotnet/runtime	System.Runtime.Numerics.Tests.WorkItemExecution
1385249	dotnet/runtime	System.Threading.Overlapped.Tests.WorkItemExecution
1385239	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.Memory.Tests.WorkItemExecution	#127105
1385233	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.Reflection.Tests.WorkItemExecution
1385081	dotnet/runtime	System.Net.HttpListener.Tests.WorkItemExecution	#126520
1385014	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-16.WorkItemExecution	#126973
1385039	dotnet/runtime	System.Text.Json.Tests.WorkItemExecution	#126168
1384859	dotnet/runtime	System.Numerics.Tensors.Tests.HalfGenericTensorPrimitives.SpanDestinationFunctions_SpecialValues	#127094
1384845	dotnet/runtime	Regression_do.WorkItemExecution	#126916
1384569	dotnet/runtime	JSImportGenerator.Unit.Tests.WorkItemExecution	#126794
1384291	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Diagnostics.Tracing.Tests.WorkItemExecution	#127011
1384370	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Runtime.Tests.WorkItemExecution	#126974
1384181	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-19.WorkItemExecution	#126782
1384222	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Runtime.Tests.WorkItemExecution	#127043
1384133	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Diagnostics.Tracing.Tests.WorkItemExecution	#126996
1384061	dotnet/runtime	System.ValueTuple.Tests.WorkItemExecution	#125491
1383845	dotnet/runtime	System.Reflection.Metadata.Tests.WorkItemExecution	#127076
1383410	dotnet/runtime	System.Threading.Tasks.Dataflow.Tests.WorkItemExecution	#127048
1383372	dotnet/runtime	WBT-NoWebcil-MONO-ST-Wasm.Build.Tests.WasmSIMDTests.WorkItemExecution	#126789
1383376	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Runtime.Tests.WorkItemExecution	#127046
1383366	dotnet/runtime	System.Diagnostics.TraceSource.Tests.WorkItemExecution	#127038
1383273	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Runtime.Tests.WorkItemExecution	#125311
1383155	dotnet/runtime	Regression_NoOptimize_d.WorkItemExecution
1383126	dotnet/runtime	Methodical_d2.WorkItemExecution	#127040
1382778	dotnet/runtime	System.Net.Requests.Tests.WorkItemExecution
1382760	dotnet/runtime	Microsoft.Extensions.FileSystemGlobbing.Tests.WorkItemExecution
1382836	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch--1.WorkItemExecution	#126916
1382767	dotnet/runtime	System.Diagnostics.Process.Tests.WorkItemExecution	#127020
1382722	dotnet/runtime	System.Runtime.Serialization.Xml.Canonicalization.Tests.WorkItemExecution	#126974
1382557	dotnet/runtime	Microsoft.Extensions.Configuration.UserSecrets.Tests.WorkItemExecution	#126408
1382243	dotnet/runtime	Wasm.Build.NativeRebuild.Tests.OptimizationFlagChangeTests.OptimizationFlagChange
1382183	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Runtime.Tests.WorkItemExecution	#126771
1381998	dotnet/runtime	System.Xml.Linq.Streaming.Tests.WorkItemExecution	#120769
1381891	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Linq.Tests.WorkItemExecution	#126946
1381829	dotnet/runtime	Workloads-ST-Wasm.Build.Tests.WasmSIMDTests.WorkItemExecution
1381809	dotnet/runtime	System.Runtime.Numerics.Tests.WorkItemExecution
1381830	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Linq.Tests.WorkItemExecution	#123445
1381694	dotnet/runtime	System.Runtime.Serialization.Formatters.Disabled.Tests.WorkItemExecution
1381742	dotnet/runtime	System.Threading.Tasks.Dataflow.Tests.WorkItemExecution	#126844
1381571	dotnet/runtime	System.Runtime.CompilerServices.VisualC.Tests.WorkItemExecution	#126848
1381495	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-6.WorkItemExecution	#126622
1381525	dotnet/runtime	System.Diagnostics.DiagnosticSource.Tests.WorkItemExecution	#126905
1381463	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-19.WorkItemExecution	#122649
1381436	dotnet/runtime	System.Net.Http.Unit.Tests.WorkItemExecution	#126852
1381387	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Runtime.InteropServices.JavaScript.Tests.WorkItemExecution	#126768
1381354	dotnet/runtime	System.Runtime.Loader.DefaultContext.Tests.WorkItemExecution	#120769
1381371	dotnet/runtime	Regressions.WorkItemExecution	#126782
1381296	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution	#126931
1381253	dotnet/runtime	Microsoft.Win32.Primitives.Tests.WorkItemExecution	#126848
1381259	dotnet/runtime	WasmTestOnChrome-MONO-ST-Microsoft.Extensions.DependencyInjection.ExternalContainers.Tests.WorkItemExecution	#125396
1381223	dotnet/runtime	System.Net.Http.Json.Functional.Tests.WorkItemExecution	#100729
1381196	dotnet/runtime	ComInterfaceGenerator.Tests.WorkItemExecution	#126977
1380997	dotnet/runtime	System.Linq.Expressions.Tests.WorkItemExecution	#126969
1381005	dotnet/runtime	System.Diagnostics.Contracts.Tests.WorkItemExecution	#126544
1380936	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Text.Encoding.Tests.WorkItemExecution	#126965
1380944	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Runtime.Tests.WorkItemExecution	#126142
1380876	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.IO.Compression.Tests.WorkItemExecution	#126809
1380615	dotnet/runtime	WasmTestOnV8-CLR-ST-System.Runtime.Tests.WorkItemExecution	#100729
1380546	dotnet/runtime	System.ValueTuple.Tests.WorkItemExecution	#122649
1380526	dotnet/runtime	threading_group1.MergedTestAssembly.8.10.WorkItemExecution	#123040
1380509	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-2.WorkItemExecution	#126953
1380461	dotnet/runtime	System.Xml.Linq.SDMSample.Tests.WorkItemExecution	#126576
1380311	dotnet/runtime	System.Globalization.Calendars.Tests.WorkItemExecution	#123145
1380272	dotnet/runtime	System.Net.ServicePoint.Tests.WorkItemExecution	#125439
1380266	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Runtime.Intrinsics.Tests.WorkItemExecution	#125439
1379935	dotnet/runtime	System.Data.Odbc.Tests.WorkItemExecution	#126649
1380132	dotnet/runtime	System.Text.Json.SourceGeneration.Roslyn4.4.Tests.WorkItemExecution	#126947
1380115	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Threading.Tasks.Extensions.Tests.WorkItemExecution	#126944
1380089	dotnet/runtime	System.ComponentModel.TypeConverter.Tests.WorkItemExecution	#126917
1379976	dotnet/runtime	System.Net.Http.Functional.Tests.HttpClientHandlerTest_Http3.Public_Interop_ExactVersion_BufferContent_Success
1379947	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Runtime.Tests.WorkItemExecution	#126838
1379891	dotnet/runtime	System.Composition.Convention.Tests.WorkItemExecution	#126938
1379709	dotnet/runtime	Microsoft.Bcl.Memory.Tests.WorkItemExecution	#126277
1379742	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Net.WebSockets.Client.Tests.WorkItemExecution	#126863
1379677	dotnet/runtime	WasmTestOnChrome-MONO-ST-Microsoft.Bcl.Cryptography.Tests.WorkItemExecution	#126881
1379561	dotnet/runtime	System.ComponentModel.Primitives.Tests.WorkItemExecution	#126927
1379582	dotnet/runtime	System.Memory.Tests.WorkItemExecution	#126905
1379557	dotnet/runtime	WBT-NoWebcil-MONO-ST-Wasm.Build.Tests.Blazor.BuildPublishTests.WorkItemExecution	#126380
1379471	dotnet/runtime	chrome-DebuggerTests.MiscTests.WorkItemExecution	#126136
1379449	dotnet/runtime	chrome-DebuggerTests.SteppingTests.WorkItemExecution
1379290	dotnet/runtime	System.IO.UnmanagedMemoryStream.Tests.WorkItemExecution
1379372	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-6.WorkItemExecution	#126924
1379345	dotnet/runtime	System.Reflection.DispatchProxy.Tests.WorkItemExecution	#126917
1379365	dotnet/runtime	Methodical_d1.WorkItemExecution	#125311
1379318	dotnet/runtime	Regression_4.WorkItemExecution
1379100	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.Net.ServerSentEvents.Tests.WorkItemExecution	#126881
1379095	dotnet/runtime	System.Net.Ping.Functional.Tests.WorkItemExecution	#126916
Displaying 100 of 563 results

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
20	173	563

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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