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Merge PR #5710: Expand OTel exception handling for Azure Functions compatibility #5720

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Merged
neha-bhargava merged 3 commits into from
Feb 6, 2026
Merged

Merge PR #5710: Expand OTel exception handling for Azure Functions compatibility #5720

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73434eb
Initial plan
Copilot Feb 5, 2026
432a357
Fix fallback where OpenTelemetry instrumentation is not available
fowl2 Feb 4, 2026
101afbc
Merge branch 'main' into copilot/merge-fork-to-new-branch
neha-bhargava Feb 6, 2026
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7 changes: 6 additions & 1 deletion src/client/Microsoft.Identity.Client/PlatformsCommon/Shared/AbstractPlatformProxy.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -61,7 +61,11 @@ private IOtelInstrumentation InternalGetOtelInstrumentation()
try
{
return new OtelInstrumentation();
} catch (FileNotFoundException ex)
}
catch (Exception ex)
when (ex is FileNotFoundException
or TypeLoadException
or TypeInitializationException)
{
// Can happen in in-process Azure Functions: https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/issues/4456
Logger.Warning("Failed instantiating OpenTelemetry instrumentation. Exception: " + ex.Message);
Expand Down Expand Up @@ -247,3 +251,4 @@ internal virtual IManagedIdentityKeyProvider GetManagedIdentityKeyProvider()
public IManagedIdentityKeyProvider ManagedIdentityKeyProvider => _miKeyProvider.Value;
}
}