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
1368813	dotnet/runtime	Regression_o_3.WorkItemExecution	#126594
1368283	dotnet/runtime	System.Net.NetworkInformation.Functional.Tests.WorkItemExecution	#125596
1368677	dotnet/runtime	WasmTestOnChrome-CLR-ST-System.Xml.Linq.TreeManipulation.Tests.WorkItemExecution	#126602
1368647	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-6.WorkItemExecution	#126157
1368583	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.IO.Pipelines.Tests.WorkItemExecution	#123827
1368575	dotnet/runtime	System.Threading.Thread.Tests.WorkItemExecution	#126082
1368599	dotnet/runtime	WasmTestOnChrome-CLR-ST-System.Text.Encodings.Web.Tests.WorkItemExecution
1368420	dotnet/runtime	WBT-Workloads-MONO-ST-Wasm.Build.Tests.Blazor.SimpleRunTests.WorkItemExecution	#124266
1368512	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.ComponentModel.Tests.WorkItemExecution	#126091
1368479	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1368496	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1368340	dotnet/runtime	WasmTestOnChrome-CLR-ST-System.Formats.Asn1.Tests.WorkItemExecution	#126579
1366029	dotnet/runtime	System.IO.Compression.Brotli.Tests.WorkItemExecution	#126521
1365949	dotnet/runtime	Microsoft.Extensions.HostFactoryResolver.Tests.WorkItemExecution	#126513
1365979	dotnet/runtime	WBT-Workloads-MONO-ST-Wasm.Build.Tests.Blazor.BuildPublishTests.WorkItemExecution	#126407
1365938	dotnet/runtime	JIT.SIMD.WorkItemExecution	#126517
1365935	dotnet/runtime	JIT/Methodical/tailcall_v4/hijacking/hijacking.dll	#126517
1365727	dotnet/runtime	WBT-NoWebcil-MONO-ST-Wasm.Build.Tests.Blazor.MiscTests.WorkItemExecution	#126367
1365664	dotnet/runtime	Regression_PdbOnly_r_1.WorkItemExecution
1365474	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Runtime.Numerics.Tests.WorkItemExecution	#126428
1365434	dotnet/runtime	System.Threading.Tasks.Extensions.Tests.WorkItemExecution	#124648
1365400	dotnet/runtime	Loader.WorkItemExecution	#126499
1365397	dotnet/runtime	WasmTestOnChrome-CLR-ST-System.IO.Compression.Tests.WorkItemExecution	#126499
1364376	dotnet/runtime	WasmTestOnChrome-CLR-ST-System.Runtime.ReflectionInvokeEmit.Tests.WorkItemExecution	#126477
1365374	dotnet/runtime	System.ComponentModel.EventBasedAsync.Tests.WorkItemExecution	#126318
1365357	dotnet/runtime	System.Console.Manual.Tests.WorkItemExecution	#126449
1365330	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1365329	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1365242	dotnet/runtime	LibraryImportGenerator.Tests.WorkItemExecution	#126338
1365162	dotnet/runtime	System.Runtime.Serialization.Formatters.Tests.WorkItemExecution	#124559
1365083	dotnet/runtime	System.DirectoryServices.Protocols.Tests.WorkItemExecution	#118257
1365056	dotnet/runtime	System.Linq.Tests.WorkItemExecution	#126496
1365059	dotnet/runtime	WasmTestOnChrome-CLR-ST-System.Security.Cryptography.Tests.WorkItemExecution	#126385
1365049	dotnet/runtime	System.IO.Compression.Tests.WorkItemExecution	#126493
1365024	dotnet/runtime	WasmTestOnV8-CLR-ST-System.Threading.Tasks.Tests.WorkItemExecution	#126163
1364829	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#126486
1364403	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Runtime.InteropServices.JavaScript.Tests.WorkItemExecution	#126419
1364369	dotnet/runtime	System.IO.FileSystem.DriveInfo.Tests.WorkItemExecution	#126318
1364333	dotnet/runtime	WBT-JavascriptBundler-MONO-ST-Wasm.Build.Tests.WorkItemExecution	#126478
1364354	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#126382
1364343	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#126263
1364443	dotnet/runtime	Workloads-NoWebcil-ST-Wasm.Build.Tests.BuildPublishTests.WorkItemExecution	#126200
1364325	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.Text.Json.Tests.WorkItemExecution	#126482
1364196	dotnet/runtime	threading_group1.MergedTestAssembly.9.10.WorkItemExecution	#126388
1364158	dotnet/runtime	System.Runtime.Caching.Tests.WorkItemExecution	#126469
1364160	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#124650
1364099	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#126475
1364138	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Runtime.Tests.WorkItemExecution	#126470
1364133	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Runtime.Tests.WorkItemExecution	#126222
1363866	dotnet/runtime	System.Formats.Tar.Tests.TarReader_SparseFileTests.CorruptedSparseMap_InvalidDataException	#125283
1363889	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Diagnostics.DiagnosticSource.Tests.WorkItemExecution	#126469
1363827	dotnet/runtime	System.Buffers.Tests.WorkItemExecution	#126411
1363759	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1363720	dotnet/runtime	WasmTestOnChrome-MONO-ST-Microsoft.Extensions.Diagnostics.Tests.WorkItemExecution	#126349
1363544	dotnet/runtime	WasmTestOnChrome-CLR-ST-System.Xml.Linq.Axes.Tests.WorkItemExecution	#126372
1363386	dotnet/runtime	LibraryImportGenerator.Unit.Tests.WorkItemExecution	#126449
1363342	dotnet/runtime	WasmTestOnChrome-CLR-ST-System.Security.Cryptography.Tests.WorkItemExecution	#126443
1363322	dotnet/runtime	System.Threading.Tests.WorkItemExecution	#126372
1361006	dotnet/runtime	WBT-NoWebcil-MONO-ST-Wasm.Build.Tests.ModuleConfigTests.WorkItemExecution	#126378
1363084	dotnet/runtime	Microsoft.Extensions.Configuration.Ini.Tests.WorkItemExecution	#123969
1363079	dotnet/runtime	Regression_1.WorkItemExecution
1363012	dotnet/runtime	System.Transactions.Local.Tests.WorkItemExecution	#126276
1363024	dotnet/runtime	System.Net.NameResolution.Functional.Tests.WorkItemExecution	#126440
1361228	dotnet/runtime	WasmTestOnChrome-CLR-ST-System.Runtime.Serialization.Xml.Tests.WorkItemExecution	#125795
1362388	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Runtime.Tests.WorkItemExecution	#124527
1362111	dotnet/runtime	WBT-Workloads-MONO-ST-Wasm.Build.Tests.Blazor.MiscTests.WorkItemExecution	#126407
1362108	dotnet/runtime	WasmTestOnChrome-CLR-ST-System.Xml.Linq.Misc.Tests.WorkItemExecution	#126199
1362132	dotnet/runtime	Microsoft.Extensions.FileProviders.PhysicalFileProviderTests.WatcherWithPolling_ReturnsTrueForFileChangedWhenFileSystemWatcherDoesNotRaiseEvents	#126026
1361928	dotnet/runtime	System.Text.Json.Tests.WorkItemExecution	#126093
1361903	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.Memory.Tests.WorkItemExecution	#126399
1361945	dotnet/runtime	Microsoft.Bcl.Numerics.Tests.WorkItemExecution	#126320
1361877	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.Threading.Tasks.Parallel.Tests.WorkItemExecution	#126157
1361816	dotnet/runtime	Microsoft.Bcl.Memory.Tests.WorkItemExecution	#125333
1361742	dotnet/runtime	Microsoft.Extensions.Options.SourceGeneration.Unit.Tests.WorkItemExecution	#126306
1361653	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.Runtime.Serialization.Xml.ReflectionOnly.Tests.WorkItemExecution	#125436
1361669	dotnet/runtime	WasmTestOnChrome-CLR-ST-System.Collections.Immutable.Tests.WorkItemExecution	#126309
1361634	dotnet/runtime	Interop/TypeMap/TypeMapApp/TypeMapApp.cmd
1361582	dotnet/runtime	Microsoft.Extensions.Configuration.CommandLine.Tests.WorkItemExecution
1361497	dotnet/runtime	WasmTestOnChrome-MONO-ST-Microsoft.Extensions.Options.Tests.WorkItemExecution	#126396
1361455	dotnet/runtime	Microsoft.Extensions.FileSystemGlobbing.Tests.WorkItemExecution	#126346
1361464	dotnet/runtime	System.Reflection.Extensions.Tests.WorkItemExecution	#126372
1361361	dotnet/runtime	System.Runtime.Serialization.Primitives.Tests.WorkItemExecution	#126263
1361358	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.IO.Compression.Tests.WorkItemExecution	#126391
1361321	dotnet/runtime	System.Runtime.Caching.Tests.WorkItemExecution	#126231
1361327	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Net.Http.Json.Unit.Tests.WorkItemExecution	#126309
1361330	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Runtime.Tests.WorkItemExecution	#126179
1361182	dotnet/runtime	WBT-Workloads-MONO-ST-Wasm.Build.Tests.DiagnosticsTests.WorkItemExecution	#126388
1361225	dotnet/runtime	System.Net.WebSockets.Client.Tests.WorkItemExecution	#125900
1361191	dotnet/runtime	System.Diagnostics.TextWriterTraceListener.Tests.WorkItemExecution	#126032
1361173	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.Xml.XmlSerializer.ReflectionOnly.Tests.WorkItemExecution	#126380
1361127	dotnet/runtime	WasmTestOnChrome-CLR-ST-System.Threading.Channels.Tests.WorkItemExecution	#126382
1360893	dotnet/runtime	WasmTestOnChrome-CLR-ST-System.Security.Cryptography.Tests.WorkItemExecution	#126318
1360888	dotnet/runtime	System.Numerics.Vectors.Tests.WorkItemExecution
1360768	dotnet/runtime	System.Runtime.InteropServices.RuntimeInformation.Tests.WorkItemExecution	#126373
1360694	dotnet/runtime	System.Security.Cryptography.Tests.WorkItemExecution	#125352
1360752	dotnet/runtime	System.Diagnostics.TraceSource.Config.Tests.WorkItemExecution	#126362
1360650	dotnet/runtime	System.Resources.Extensions.BinaryFormat.Tests.WorkItemExecution	#125505
1360521	dotnet/runtime	System.Text.Encoding.Tests.WorkItemExecution	#126231
1360595	dotnet/runtime	System.Runtime.CompilerServices.VisualC.Tests.WorkItemExecution	#126306
1360245	dotnet/runtime	System.Xml.Linq.xNodeBuilder.Tests.WorkItemExecution	#126352
Displaying 100 of 339 results

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
12	91	339

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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