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
1452552	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1452534	dotnet/runtime	WBT-Workloads-MONO-ST-Wasm.Build.Tests.HttpTests.WorkItemExecution	#129067
1452517	dotnet/runtime	Regression_r_1.WorkItemExecution
1452511	dotnet/runtime	Regression_PdbOnly_ro.WorkItemExecution
1452460	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Threading.Tests.WorkItemExecution	#129068
1452402	dotnet/runtime	WBT-NoWebcil-MONO-ST-Wasm.Build.Tests.Blazor.EventPipeDiagnosticsTests.WorkItemExecution	#129067
1449378	dotnet/runtime	WBT-Workloads-MONO-ST-Wasm.Build.Tests.Blazor.AssetCachingTests.WorkItemExecution	#128956
1452183	dotnet/runtime	Regression_PdbOnly_r_4.WorkItemExecution	#129060
1451132	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Runtime.ReflectionInvokeInterpreted.Tests.WorkItemExecution	#127318
1450960	dotnet/runtime	System.IO.Tests.WorkItemExecution	#128957
1450816	dotnet/runtime	System.Text.Encoding.Extensions.Tests.WorkItemExecution	#128604
1450824	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Runtime.Serialization.Xml.ReflectionOnly.Tests.WorkItemExecution	#127695
1450782	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#129007
1450454	dotnet/runtime	System.ValueTuple.Tests.WorkItemExecution	#129019
2992508	dotnet-runtime	System.Runtime.InteropServices.Tests.StructureToPtrTests.StructureToPtr_ByValTStr_MultiByte_Overflow	#61848
1450161	dotnet/runtime	System.Linq.Expressions.Tests.WorkItemExecution	#129006
1449973	dotnet/runtime	System.Runtime.Caching.Tests.WorkItemExecution	#126324
1449935	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Net.Primitives.Functional.Tests.WorkItemExecution	#128477
1449829	dotnet/runtime	System.Net.Primitives.Pal.Tests.WorkItemExecution	#128988
1449319	dotnet/runtime	Loader.classloader.WorkItemExecution
1449118	dotnet/runtime	WBT-NoWebcil-MONO-ST-Wasm.Build.Tests.WasmSIMDTests.WorkItemExecution	#128969
1449125	dotnet/runtime	Methodical_r1.WorkItemExecution	#128970
1448852	dotnet/runtime	WasmTestOnV8-CLR-ST-System.Runtime.Tests.WorkItemExecution	#128604
1448714	dotnet/runtime	WBT-NoWebcil-MONO-ST-Wasm.Build.Tests.IcuShardingTests.WorkItemExecution	#128272
1448402	dotnet/runtime	System.ComponentModel.Composition.Registration.Tests.WorkItemExecution	#128954
1448362	dotnet/runtime	Microsoft.CSharp.Tests.WorkItemExecution	#128863
1448333	dotnet/runtime	System.Reflection.Emit.ILGeneration.Tests.WorkItemExecution	#127318
1445911	dotnet/runtime	Microsoft.Extensions.Primitives.Tests.WorkItemExecution	#128896
1447585	dotnet/runtime	System.Diagnostics.Tools.Tests.WorkItemExecution	#128940
1447305	dotnet/runtime	JIT.Generics.MergedTestAssembly.0.1.WorkItemExecution	#125311
1447226	dotnet/runtime	System.ServiceModel.Syndication.Tests.WorkItemExecution	#128180
1447159	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-1.WorkItemExecution	#128922
1447125	dotnet/runtime	System.Xml.XmlSerializer.ReflectionOnly.Tests.WorkItemExecution
1446958	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch--2.WorkItemExecution	#128923
1446775	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.Reflection.Extensions.Tests.WorkItemExecution	#128917
1446669	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.IO.MemoryMappedFiles.Tests.WorkItemExecution	#118616
1446574	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-17.WorkItemExecution	#128920
1446486	dotnet/runtime	Microsoft.Extensions.Configuration.Functional.Tests.WorkItemExecution	#128916
1446344	dotnet/runtime	WasmTestOnChrome-ST-System.Buffers.Tests.WorkItemExecution
1446396	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.IO.Compression.ZipFile.Tests.WorkItemExecution
1446034	dotnet/runtime	Microsoft.Extensions.Configuration.FileExtensions.Tests.WorkItemExecution	#128365
1445510	dotnet/runtime	System.Text.Encoding.Extensions.Tests.WorkItemExecution	#125437
1445229	dotnet/runtime	CoreMangLib.WorkItemExecution
1444966	dotnet/runtime	System.Reflection.TypeExtensions.Tests.WorkItemExecution
1444837	dotnet/runtime	WBT-NoWebcil-MONO-ST-Wasm.Build.Tests.WasmBuildAppTest.WorkItemExecution	#128426
1444759	dotnet/runtime	System.Security.Cryptography.Xml.Tests.WorkItemExecution	#128599
1444735	dotnet/runtime	WBT-NoWorkload-MONO-ST-Wasm.Build.Tests.WorkItemExecution	#128423
1443779	dotnet/runtime	Workloads-NoWebcil-ST-Wasm.Build.Tests.BuildPublishTests.WorkItemExecution	#128775
1443658	dotnet/runtime	System.Globalization.Tests.WorkItemExecution	#127690
1443557	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1443286	dotnet/runtime	System.Numerics.Tensors.Tests.WorkItemExecution	#128319
1443219	dotnet/runtime	Microsoft.Extensions.Logging.Tests.WorkItemExecution	#128553
1442904	dotnet/runtime	WasmTestOnBrowser-System.Globalization.Hybrid.WASM.Tests.WorkItemExecution	#128831
1442767	dotnet/runtime	System.Text.RegularExpressions.Tests.WorkItemExecution	#128828
1442618	dotnet/runtime	WBT-Workloads-MONO-ST-Wasm.Build.Tests.BuildPublishTests.WorkItemExecution	#128519
1442611	dotnet/runtime	System.Xml.Linq.xNodeReader.Tests.WorkItemExecution
1442575	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Threading.Tests.WorkItemExecution	#128375
1442561	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Threading.Tests.WorkItemExecution	#128787
1442492	dotnet/runtime	System.Runtime.Handles.Tests.WorkItemExecution	#128807
1442478	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1442408	dotnet/runtime	WasmTestOnFirefox-CLR-ST-System.Threading.Tests.WorkItemExecution	#128787
1442372	dotnet/runtime	CdacXPlatDumpTests_host_linux_x64_dumps_windows_x86.WorkItemExecution
1442373	dotnet/runtime	Regression_PdbOnly_r_2.WorkItemExecution	#128811
1442260	dotnet/runtime	WBT-Workloads-MONO-ST-Wasm.Build.Tests.WasmTemplateTests.WorkItemExecution
1439242	dotnet/runtime	System.Data.DataSetExtensions.Tests.WorkItemExecution	#126495
1437353	dotnet/runtime	Workloads-ST-Wasm.Build.Tests.BuildPublishTests.WorkItemExecution	#126200
1438777	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1435031	dotnet/runtime	System.Web.HttpUtility.Tests.WorkItemExecution	#125596
1433541	dotnet/runtime	WasmTestOnV8-CLR-ST-System.Threading.Tests.WorkItemExecution	#128532
1433088	dotnet/runtime	Regression_3.WorkItemExecution
1432946	dotnet/runtime	readytorun_coreroot_determinism.WorkItemExecution	#128320
1432820	dotnet/runtime	WBT-NoWorkload-CLR-ST-Wasm.Build.Tests.WasmTemplateTests.WorkItemExecution	#127989
1432687	dotnet/runtime	WBT-NoWebcil-MONO-ST-Wasm.Build.Tests.NonWasmTemplateBuildTests.WorkItemExecution	#128519
1432768	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.Xml.Linq.Axes.Tests.WorkItemExecution
1431984	dotnet/runtime	WBT-NoWorkload-CLR-ST-Wasm.Build.Tests.NativeLibraryTests.WorkItemExecution	#128465
1429884	dotnet/runtime	System.Net.Mail.Functional.Tests.WorkItemExecution	#127228
1428670	dotnet/runtime	MetricOuterLoop1.Tests.WorkItemExecution	#128162
1428227	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-19.WorkItemExecution
1427810	dotnet/runtime	Microsoft.Bcl.Memory.Tests.WorkItemExecution	#128252
1427025	dotnet/runtime	System.Threading.Overlapped.Tests.WorkItemExecution	#125437
2978848	dotnet-runtime	System.Xml.Xsl.XslTransformApi.Tests.WorkItemExecution	#61199
1426420	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1426101	dotnet/runtime	Exceptions.MergedTestAssembly.0.1.WorkItemExecution	#128351
1426047	dotnet/runtime	WasmTestOnChrome-MONO-ST-System.Runtime.InteropServices.JavaScript.Tests.WorkItemExecution	#127475
2977907	dotnet-runtime	System.IO.Compression.ZipFile.Tests.WorkItemExecution	#61199
1424920	dotnet/runtime	System.Security.Cryptography.Csp.Tests.WorkItemExecution	#128068
1424802	dotnet/runtime	System.Reflection.TypeExtensions.Tests.WorkItemExecution	#128326
1424824	dotnet/runtime	JSImportGenerator.Unit.Tests.WorkItemExecution	#128327
1424748	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-6.WorkItemExecution	#125024
1424743	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch--2.WorkItemExecution	#128325
1424763	dotnet/runtime	System.Text.Json.SourceGeneration.Roslyn3.11.Tests.WorkItemExecution	#128261
1424645	dotnet/runtime	WasmTestOnFirefox-MONO-ST-System.Runtime.Serialization.Xml.Tests.WorkItemExecution	#128252
1424664	dotnet/runtime	baseservices-exceptions.WorkItemExecution	#128323
1424544	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1424427	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch--2.WorkItemExecution	#126646
1424457	dotnet/runtime	WBT-NoWebcil-MONO-ST-Wasm.Build.Tests.Blazor.MiscTests.WorkItemExecution	#127749
1424409	dotnet/runtime	readytorun.WorkItemExecution
1424333	dotnet/runtime	Regression_NoOptimize_d.WorkItemExecution	#128250
1424289	dotnet/runtime	System.Globalization.Calendars.Tests.WorkItemExecution	#128068
1424138	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-19.WorkItemExecution	#127133
Displaying 100 of 238 results

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
8	64	238

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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