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
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
1361006	dotnet/runtime	WBT-NoWebcil-MONO-ST-Wasm.Build.Tests.DllImportTests.WorkItemExecution	#126378
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
1360205	dotnet/runtime	Wasm.Build.Tests.IcuShardingTests2.DefaultAvailableIcuShardsFromRuntimePack	#126211
1359991	dotnet/runtime	System.Threading.Tasks.Dataflow.Tests.WorkItemExecution	#126351
1360078	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Net.WebSockets.Client.Tests.WorkItemExecution	#126324
1359879	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Threading.Tasks.Tests.WorkItemExecution	#125478
1359854	dotnet/runtime	WasmTestOnChrome-CLR-ST-System.Xml.Linq.Properties.Tests.WorkItemExecution	#126094
1359950	dotnet/runtime	System.Net.Http.Functional.Tests.HttpClientHandlerTest_Http3.Public_Interop_ExactVersion_BufferContent_Success
1359649	dotnet/runtime	Microsoft.Extensions.Configuration.Functional.Tests.WorkItemExecution
1359619	dotnet/runtime	System.Text.Json.Tests.WorkItemExecution	#124650
1359468	dotnet/runtime	System.Xml.Linq.xNodeReader.Tests.WorkItemExecution	#126347
1359440	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#125472
1359443	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Text.Encodings.Web.Tests.WorkItemExecution	#126181
1359432	dotnet/runtime	System.Text.Encoding.Tests.WorkItemExecution	#126231
1359404	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.IO.FileSystem.Tests.WorkItemExecution	#126105
1359383	dotnet/runtime	System.Diagnostics.Process.Tests.WorkItemExecution	#126109
1359401	dotnet/runtime	System.Runtime.Serialization.Formatters.Disabled.Tests.WorkItemExecution	#126314
1359333	dotnet/runtime	System.Reflection.Emit.ILGeneration.Tests.WorkItemExecution	#126009
1359234	dotnet/runtime	System.Diagnostics.DiagnosticSource.Switches.Tests.WorkItemExecution	#126340
1359166	dotnet/runtime	WasmTestOnChrome-CLR-ST-System.Threading.Tasks.Parallel.Tests.WorkItemExecution	#126294
1359083	dotnet/runtime	System.Net.NameResolution.Functional.Tests.WorkItemExecution	#126328
1358969	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Runtime.Serialization.Xml.ReflectionOnly.Tests.WorkItemExecution	#126222
1358937	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Net.WebSockets.Client.Tests.WorkItemExecution	#123252
1358856	dotnet/runtime	ComInterfaceGenerator.Unit.Tests.WorkItemExecution	#126326
1358945	dotnet/runtime	WasmTestOnV8-CLR-ST-System.Runtime.InteropServices.JavaScript.Tests.WorkItemExecution	#126236
1358874	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.Xml.Linq.Events.Tests.WorkItemExecution	#125629
1358902	dotnet/runtime	WasmTestOnChrome-CLR-ST-IcuAppLocal.Tests.WorkItemExecution	#126281
1358808	dotnet/runtime	Regression_9.WorkItemExecution	#126327
1358789	dotnet/runtime	Regression_9.WorkItemExecution	#125352
1358739	dotnet/runtime	System.IO.Hashing.Tests.WorkItemExecution	#125437
1358865	dotnet/runtime	threading_group1.MergedTestAssembly.3.10.WorkItemExecution	#126313
1358756	dotnet/runtime	System.Text.Json.SourceGeneration.Roslyn3.11.Unit.Tests.WorkItemExecution
1358671	dotnet/runtime	System.Linq.Parallel.Tests.WorkItemExecution	#126261
1358727	dotnet/runtime	System.Security.Cryptography.Csp.Tests.WorkItemExecution	#124650
1358459	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.Runtime.CompilerServices.VisualC.Tests.WorkItemExecution	#126300
1358451	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Text.Json.Tests.WorkItemExecution	#126314
1358434	dotnet/runtime	System.ComponentModel.Composition.Registration.Tests.WorkItemExecution	#126320
1358470	dotnet/runtime	WBT-NoWorkload-CLR-ST-Wasm.Build.Tests.WasmTemplateTests.WorkItemExecution	#126324
1358346	dotnet/runtime	WasmTestOnBrowser-System.Net.WebSockets.Client.Tests.WorkItemExecution	#124544
1358263	dotnet/runtime	WasmTestOnChrome-CLR-ST-System.Net.Http.Unit.Tests.WorkItemExecution	#125174
1358213	dotnet/runtime	System.ComponentModel.TypeConverter.Tests.WorkItemExecution	#126285
1358217	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Net.WebSockets.Tests.WorkItemExecution	#125759
1358166	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#126026
1358093	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Runtime.Serialization.Xml.Tests.WorkItemExecution	#126315
1358144	dotnet/runtime	WasmTestOnChrome-CLR-ST-System.ComponentModel.Tests.WorkItemExecution	#126316
1358048	dotnet/runtime	System.Reflection.Emit.Tests.WorkItemExecution	#124650
1358026	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.IO.Compression.Tests.WorkItemExecution	#126082
1358058	dotnet/runtime	System.Threading.ThreadPool.Tests.WorkItemExecution	#125607
1357951	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.Diagnostics.Tools.Tests.WorkItemExecution	#126199
1357926	dotnet/runtime	System.Net.NameResolution.Functional.Tests.WorkItemExecution	#126309
1357913	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Net.Http.Functional.Tests.WorkItemExecution	#125437
1357763	dotnet/runtime	System.Runtime.Numerics.Tests.WorkItemExecution	#126302
1357812	dotnet/runtime	System.Security.Cryptography.OpenSsl.Tests.WorkItemExecution
1357742	dotnet/runtime	WBT-NoWebcil-MONO-ST-Wasm.Build.Tests.ModuleConfigTests.WorkItemExecution	#125439
1357655	dotnet/runtime	Microsoft.Extensions.FileProviders.PhysicalFileProviderTests.WatcherWithPolling_ReturnsTrueForFileChangedWhenFileSystemWatcherDoesNotRaiseEvents	#126026
1357578	dotnet/runtime	WasmTestOnChrome-CLR-ST-System.Xml.XmlSerializer.ReflectionOnly.Tests.WorkItemExecution
1357354	dotnet/runtime	System.Net.Security.Tests.WorkItemExecution	#126289
1357332	dotnet/runtime	System.Security.Cryptography.Tests.CompositeMLDsaFactoryTests.AlgorithmMatches_Import	#126277
1357324	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.Memory.Tests.WorkItemExecution	#126287
1357274	dotnet/runtime	System.Reflection.InvokeEmit.Tests.WorkItemExecution	#126259
1357205	dotnet/runtime	System.Net.WebSockets.Client.Tests.WorkItemExecution	#126282
1357188	dotnet/runtime	System.Xml.Linq.TreeManipulation.Tests.WorkItemExecution	#126283
1357166	dotnet/runtime	System.Net.Security.Enterprise.Tests.WorkItemExecution	#126280
1357163	dotnet/runtime	WasmTestOnChrome-CLR-ST-System.Net.Http.Enterprise.Tests.WorkItemExecution	#126222
Displaying 100 of 307 results

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
22	201	307

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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