Test failure: Interop Work Item throws System.IO.FileNotFoundException

Read Documentation/Build Analysis/KnownIssueJsonStepByStep.md and inspect the Error Message JSON against the Interop.WorkItemExecution build result and validation report. Update the matching error text, then rerun known-issue validation and confirm that the build is matched.

Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1594299

Build error leg or test failing: Interop Work Item

Error Detail:

Unhandled exception. System.IO.FileNotFoundException: Could not find assembly 'TypeMapLib1, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'. Either explicitly load this assembly using a method such as LoadFromAssemblyPath() or use a MetadataAssemblyResolver that returns a valid assembly.
   at System.Reflection.TypeLoading.Ecma.EcmaResolver.ResolveAssembly(AssemblyReferenceHandle handle, EcmaModule module) in /_/src/libraries/System.Reflection.MetadataLoadContext/src/System/Reflection/TypeLoading/General/Ecma/EcmaResolver.cs:line 150
   at System.Reflection.TypeLoading.Ecma.EcmaResolver.ComputeTypeRefResolution(TypeReferenceHandle handle, EcmaModule module) in /_/src/libraries/System.Reflection.MetadataLoadContext/src/System/Reflection/TypeLoading/General/Ecma/EcmaResolver.cs:line 77
   at System.Reflection.TypeLoading.Ecma.EcmaModule.GetTypeFromReference(MetadataReader reader, TypeReferenceHandle handle, Byte rawTypeKind) in /_/src/libraries/System.Reflection.MetadataLoadContext/src/System/Reflection/TypeLoading/Modules/Ecma/EcmaModule.TypeProvider.cs:line 20
   at System.Reflection.Metadata.Ecma335.SignatureDecoder`2.DecodeType(BlobReader& blobReader, Boolean allowTypeSpecifications, Int32 typeCode) in /_/src/libraries/System.Reflection.Metadata/src/System/Reflection/Metadata/Ecma335/SignatureDecoder.cs:line 127
   at System.Reflection.Metadata.Ecma335.SignatureDecoder`2.DecodeTypeSequence(BlobReader& blobReader) in /_/src/libraries/System.Reflection.Metadata/src/System/Reflection/Metadata/Ecma335/SignatureDecoder.cs:line 152
   at System.Reflection.Metadata.Ecma335.SignatureDecoder`2.DecodeType(BlobReader& blobReader, Boolean allowTypeSpecifications, Int32 typeCode) in /_/src/libraries/System.Reflection.Metadata/src/System/Reflection/Metadata/Ecma335/SignatureDecoder.cs:line 115
   at System.Reflection.TypeLoading.Ecma.EcmaResolver.ResolveTypeDefRefOrSpec(EntityHandle handle, EcmaModule module, TypeContext& typeContext) in /_/src/libraries/System.Reflection.MetadataLoadContext/src/System/Reflection/TypeLoading/General/Ecma/EcmaResolver.cs:line 19
   at System.Reflection.TypeLoading.Ecma.EcmaCustomAttributeData.ComputeAttributeType() in /_/src/libraries/System.Reflection.MetadataLoadContext/src/System/Reflection/TypeLoading/CustomAttributes/Ecma/EcmaCustomAttributeData.cs:line 54
   at System.Reflection.TypeLoading.RoCustomAttributeData.get_AttributeType() in /_/src/libraries/System.Reflection.MetadataLoadContext/src/System/Reflection/TypeLoading/CustomAttributes/RoCustomAttributeData.cs:line 15
   at AssemblyChecker.AssemblyInspector.IsDebug(String path) in /_/src/coreclr/tools/AssemblyChecker/AssemblyInspector.cs:line 20
   at AssemblyChecker.Program.Main(String[] args) in /_/src/coreclr/tools/AssemblyChecker/Program.cs:line 84
[createdump] Gathering state for process 66735 
[createdump] Crashing thread d63ab signal 6 (0006)
[createdump] Writing crash report to file /cores/coredump.66735.dmp.crashreport.json
[createdump] Crash report successfully written
[createdump] Writing minidump with heap to file /cores/coredump.66735.dmp
[createdump] Written 749564024 bytes (182999 pages) to core file
[createdump] Target process is alive
[createdump] Dump successfully written in 2674ms
waitpid() returned successfully (wstatus 00000000) WEXITSTATUS 0 WTERMSIG 0

Error Message

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": "Failed test: Interop Work Item",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1594299
Error message validated: [Failed test: Interop Work Item]
Result validation: ❌ Known issue did not match with the provided build.
Validation performed at: 9/20/2026 2:23:57 AM UTC

Report

Summary