Method not found: 'Microsoft.CodeCoverage.Core.Configurations.DataCollectorConfiguration Microsoft.CodeCoverage.Core.Configurations.ConfigurationFileUtility.GetConfiguration(System.Xml.XmlElement, Microsoft.CodeCoverage.Core.ILogger)
@fhnaseer is already working on this.
Since Oct 7, 2025.
Assessment
This issue has not been assessed yet.
Description
Describe the bug
We are updating some packages, and the upgrade for MsTest seems to break some tests in Azure Pipelines:
`Data collector 'Code Coverage' message: Data collector 'Code Coverage' threw an exception during type loading, construction, or initialization: System.MissingMethodException: Method not found: 'Microsoft.CodeCoverage.Core.Configurations.DataCollectorConfiguration Microsoft.CodeCoverage.Core.Configurations.ConfigurationFileUtility.GetConfiguration(System.Xml.XmlElement, Microsoft.CodeCoverage.Core.ILogger)'
Steps To Reproduce
Update MsTest package to v3.8.0 or beyond.
(It seems in this version the CodeCoverage is now a dependency of MSTest metapackage)
WIth .NET472 test projects there is no problem, with .NET8 test projects, we see this error in Azure Pipelines.
Expected behavior
Tests are run and succeed with no errors.
Actual behavior
Test are run and succeed, after we get an error on the Code Coverage.
Additional context
Command line:
D:\a\_tool\dotnet\dotnet.exe test D:\a\29\s\Project\Project.CITest\Project.CITest.csproj --logger trx --results-directory D:\a\_temp --configuration Release --arch x64 --logger trx --settings Project\default.runsettings
Stacktrace;
Data collector 'Code Coverage' message: Data collector 'Code Coverage' threw an exception during type loading, construction, or initialization: System.MissingMethodException: Method not found: 'Microsoft.CodeCoverage.Core.Configurations.DataCollectorConfiguration Microsoft.CodeCoverage.Core.Configurations.ConfigurationFileUtility.GetConfiguration(System.Xml.XmlElement, Microsoft.CodeCoverage.Core.ILogger)'. at Microsoft.VisualStudio.Coverage.DynamicCoverageDataCollector.OnInitialize(XmlElement configurationElement) at Microsoft.VisualStudio.TraceCollector.BaseDataCollector.Initialize(XmlElement configurationElement, IDataCollectionEvents events, IDataCollectionSink dataSink, IDataCollectionLogger logger, IDataCollectionAgentContext agentContext) at Microsoft.VisualStudio.TraceCollector.BaseDataCollector.Initialize(XmlElement configurationElement, DataCollectionEvents events, DataCollectionSink dataSink, DataCollectionLogger logger, DataCollectionEnvironmentContext environmentContext) at Microsoft.VisualStudio.TestPlatform.Common.DataCollector.DataCollectorInformation.InitializeDataCollector(ITelemetryReporter telemetryReporter) in /_/src/Microsoft.TestPlatform.Common/DataCollection/DataCollectorInformation.cs:line 115 at Microsoft.VisualStudio.TestPlatform.Common.DataCollector.DataCollectionManager.LoadAndInitialize(DataCollectorSettings dataCollectorSettings, String settingsXml) in /_/src/Microsoft.TestPlatform.Common/DataCollection/DataCollectionManager.cs:line 537.. Results File: D:\a\_temp\AzDevOps_agent0009TN_2025-10-07_10_45_14.trx
- Dominant language
- C#
- Stars
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- Forks
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- Avg merge
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- Merged PRs (30d)
- 2
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