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	Repository	Test	Pull Request
1485786	dotnet/runtime	System.Xml.XmlSerializer.ReflectionOnly.Tests.WorkItemExecution
1485607	dotnet/runtime	MetricOuterLoop.Tests.WorkItemExecution	#129968
1485582	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Text.Encodings.Web.Tests.WorkItemExecution	#128862
1485511	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Security.Claims.Tests.WorkItemExecution	#122093
1485187	dotnet/runtime	WasmTestOnChrome-ST-System.Text.RegularExpressions.Tests.WorkItemExecution
1485378	dotnet/runtime	Microsoft.XmlSerializer.Generator.Tests.WorkItemExecution	#129582
1485343	dotnet/runtime	tracing.WorkItemExecution	#129424
1484925	dotnet/runtime	Microsoft.AspNetCore.Hosting.FunctionalTests.ShutdownTests.ShutdownTestRun
1484826	dotnet/runtime	WasmTestOnFirefox-MONO-ST-Microsoft.CSharp.Tests.WorkItemExecution	#129259
1484821	dotnet/runtime	WBT-NoWebcil-MONO-ST-Wasm.Build.Tests.PreloadingTests.WorkItemExecution	#129934
1484807	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Threading.Tests.WorkItemExecution	#129910
1484815	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Runtime.Tests.WorkItemExecution	#129941
1484749	dotnet/runtime	Microsoft.AspNetCore.Hosting.FunctionalTests.ShutdownTests.ShutdownTestRun
1484750	dotnet/runtime	threading_group1.WorkItemExecution
1484622	dotnet/runtime	threading_group1.WorkItemExecution	#129941
1484615	dotnet/runtime	CdacStressTests.WorkItemExecution	#129935
1484480	dotnet/runtime	System.Linq.AsyncEnumerable.Tests.WorkItemExecution	#129502
1484429	dotnet/runtime	JIT/Regression/JitBlue/Runtime_34937/Runtime_34937/Runtime_34937.cmd
1484398	dotnet/runtime	jit64_5.WorkItemExecution
1484420	dotnet/runtime	CdacDumpTests.WorkItemExecution	#129858
1484382	dotnet/runtime	System.IO.Tests.Enumeration.MatchTypesTests_DirectoryInfo_GetFiles.OverlappingExtensions_AllMatchTypes_Comprehensive	#127368
1484363	dotnet/runtime	System.Collections.Concurrent.Tests.WorkItemExecution	#129923
1484157	dotnet/runtime	System.Data.Odbc.Tests.WorkItemExecution	#129923
1484000	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-17.WorkItemExecution	#129703
1484052	dotnet/runtime	System.Diagnostics.StackTrace.Tests.WorkItemExecution	#127980
1483880	dotnet/runtime	Workloads-NoWebcil-ST-Wasm.Build.NativeRebuild.Tests.ReferenceNewAssemblyRebuildTest.WorkItemExecution	#129357
1483754	dotnet/runtime	System.Xml.Linq.Properties.Tests.WorkItemExecution	#129908
1483521	dotnet/runtime	WasmTestOnChrome-MONO-ST-Microsoft.Extensions.Configuration.FileExtensions.Tests.WorkItemExecution	#126367
1483291	dotnet/runtime	Microsoft.Extensions.FileProviders.Physical.Tests.WorkItemExecution	#129894
1483236	dotnet/runtime	Regression_1.WorkItemExecution	#127520
1483107	dotnet/runtime	System.Private.Xml.Tests.WorkItemExecution	#129885
1482799	dotnet/runtime	System.IO.Compression.Tests.zip_ReadTests.PasswordProtectedZip64_UpdateMode_Throws	#122093
1482556	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Xml.XmlSerializer.ReflectionOnly.Tests.WorkItemExecution
1482568	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Runtime.Intrinsics.Tests.WorkItemExecution	#129885
1482479	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Threading.Tests.WorkItemExecution	#129882
1482440	dotnet/runtime	WBT-NoWorkload-CLR-ST-Wasm.Build.Tests.ModuleConfigTests.WorkItemExecution	#129766
1482037	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Net.WebSockets.Tests.WorkItemExecution	#129793
1482031	dotnet/runtime	HardwareIntrinsics_Arm_ro.WorkItemExecution	#129870
1481584	dotnet/runtime	System.Threading.Channels.Tests.WorkItemExecution	#129624
1481412	dotnet/runtime	Microsoft.Extensions.DependencyModel.Tests.WorkItemExecution	#129702
1481374	dotnet/runtime	Exceptions.MergedTestAssembly.0.1.WorkItemExecution	#129851
1480969	dotnet/runtime	WBT-NoWebcil-MONO-ST-Wasm.Build.Tests.Blazor.AssetCachingTests.WorkItemExecution	#129396
1480862	dotnet/runtime	WasmTestOnChrome-MONO-ST-Microsoft.Extensions.Options.Tests.WorkItemExecution	#129810
1480831	dotnet/runtime	System.Runtime.CompilerServices.Unsafe.Tests.WorkItemExecution	#129119
1480565	dotnet/runtime	System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http2.SendAsync_Success_ConnectionSetupActivityGraphRecorded
1480462	dotnet/runtime	Regression_ro_1.WorkItemExecution
1480311	dotnet/runtime	System.Runtime.Serialization.Xml.Canonicalization.Tests.WorkItemExecution	#129762
1480344	dotnet/runtime	System.Text.Encodings.Web.Tests.WorkItemExecution	#129825
1480284	dotnet/runtime	Workloads-ST-Wasm.Build.Tests.WasmRunOutOfAppBundleTests.WorkItemExecution
1479743	dotnet/runtime	WBT-NoWebcil-MONO-ST-Wasm.Build.Tests.Blazor.AssetCachingTests.WorkItemExecution	#129299
1479716	dotnet/runtime	IntrinsicsInSystemPrivateCoreLib.Tests.WorkItemExecution	#126124
1479692	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.Private.Uri.Unit.Tests.WorkItemExecution	#129693
1479813	dotnet/runtime	WasmTestOnChrome-ST-System.Text.RegularExpressions.Tests.WorkItemExecution
1479326	dotnet/runtime	WBT-NoWebcil-MONO-ST-Wasm.Build.Tests.Blazor.AppsettingsTests.WorkItemExecution	#129396
1479364	dotnet/runtime	Microsoft.Extensions.DependencyModel.Tests.WorkItemExecution	#128741
1479279	dotnet/runtime	JIT_d.WorkItemExecution
1479134	dotnet/runtime	System.Linq.Tests.WorkItemExecution	#129795
1478686	dotnet/runtime	Regression_6.WorkItemExecution	#129789
1478363	dotnet/runtime	System.Xml.Linq.Events.Tests.WorkItemExecution
1478299	dotnet/runtime	WasmTestOnChrome-ST-System.Text.Json.Tests.WorkItemExecution
1478126	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Diagnostics.DiagnosticSource.Tests.WorkItemExecution
1477595	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Reflection.Extensions.Tests.WorkItemExecution	#128768
1477496	dotnet/runtime	System.Console.Tests.WorkItemExecution	#129747
1477325	dotnet/runtime	System.Xml.Schema.Extensions.Tests.WorkItemExecution	#129744
1476888	dotnet/runtime	baseservices.WorkItemExecution
1476904	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Threading.Overlapped.Tests.WorkItemExecution	#128252
1476724	dotnet/runtime	tracing.WorkItemExecution	#129729
1476746	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Runtime.Tests.WorkItemExecution	#129730
1476247	dotnet/runtime	System.IO.Tests.WorkItemExecution	#125901
1476070	dotnet/runtime	JIT_r.WorkItemExecution	#129711
1475453	dotnet/runtime	WasmTestOnChrome-MONO-ST-Microsoft.Extensions.Primitives.Tests.WorkItemExecution	#129624
1475271	dotnet/runtime	System.Net.Mail.Tests.MailMessageTest.SendMailMessageTest	#129282
1475071	dotnet/runtime	System.Reflection.Emit.Lightweight.Tests.WorkItemExecution	#129412
1474873	dotnet/runtime	Microsoft.Extensions.Configuration.Functional.Tests.WorkItemExecution	#129406
1474872	dotnet/runtime	System.Console.Manual.Tests.WorkItemExecution	#129405
1474847	dotnet/runtime	threading_group1.MergedTestAssembly.7.10.WorkItemExecution	#129683
1474387	dotnet/runtime	Wasm.Build.Tests.Blazor.AssetCachingTests.BlazorApp_BasedOnFingerprinting_LoadsWasmAssetsFromCache	#129299
1474331	dotnet/runtime	Wasm.Build.Tests.WasmTemplateTests.RunWithDifferentAppBundleLocations	#125192
1474259	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-11.WorkItemExecution
1474201	dotnet/runtime	Methodical_ro.WorkItemExecution	#129659
1474074	dotnet/runtime	Microsoft.Extensions.DependencyModel.Tests.WorkItemExecution	#129657
1474059	dotnet/runtime	Directed_1.WorkItemExecution
1473998	dotnet/runtime	threading_group1.WorkItemExecution	#129637
1474003	dotnet/runtime	WasmTestOnV8-CLR-ST-System.Runtime.Tests.WorkItemExecution	#129658
1473969	dotnet/runtime	Regression_o_2.WorkItemExecution	#129657
1473863	dotnet/runtime	System.Runtime.Serialization.Schema.Tests.WorkItemExecution	#128365
1473811	dotnet/runtime	WBT-Workloads-MONO-ST-Wasm.Build.Tests.WasmBuildAppTest.WorkItemExecution	#129634
1473638	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-7.WorkItemExecution	#129644
1473274	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-19.WorkItemExecution	#129634
1472674	dotnet/runtime	System.Threading.Tests.WorkItemExecution	#129377
1463896	dotnet/runtime	WBT-NoWebcil-MONO-ST-Wasm.Build.Tests.Blazor.AppsettingsTests.WorkItemExecution	#129405
1472592	dotnet/runtime	WasmTestOnV8-CLR-ST-System.Threading.Tests.WorkItemExecution	#129403
1472390	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1472269	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.Net.Primitives.UnitTests.Tests.WorkItemExecution	#129612
1472102	dotnet/runtime	WasmTestOnFirefox-MONO-ST-Microsoft.Extensions.Options.Tests.WorkItemExecution	#128741
1472138	dotnet/runtime	Wasm.Build.Tests.Blazor.AssetCachingTests.BlazorApp_BasedOnFingerprinting_LoadsWasmAssetsFromCache
1472032	dotnet/runtime	System.Diagnostics.StackTrace.Tests.WorkItemExecution	#129593
1471707	dotnet/runtime	Wasm.Build.Tests.Blazor.AssetCachingTests.BlazorApp_BasedOnFingerprinting_LoadsWasmAssetsFromCache	#125901
1471625	dotnet/runtime	Wasm.Build.Tests.Blazor.AssetCachingTests.BlazorApp_BasedOnFingerprinting_LoadsWasmAssetsFromCache	#129590
1471575	dotnet/runtime	System.Data.Common.Tests.WorkItemExecution	#129403
Displaying 100 of 361 results

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
8	69	361

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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