.NET Library release notes
These release notes describe the new features, improvements, and fixed issues in the SolarWinds Observability .NET Library.
Learn more
- For release notes for all SolarWinds agents, libraries, and collectors, see SolarWinds Observability SaaS summary release notes.
- For currently known issues, see Known issues.
- For information about requirements, see SolarWinds Observability SaaS System Requirements.
2025 updates

5.3.10 - April 14, 2025
New features and improvements
-
Added new environment variables:
SW_APM_EXCLUDE_PROCESSES
andSW_APM_INCLUDE_PROCESSES
. TheSW_APM_INCLUDE_PROCESSES
environment variable can be used to enable non-IIS processes for instrumentation without needing to update thesolarwinds_apm.config
file. -
Upgrade the C++ Runtimes to version
14.42.34433
. -
Added additional attribute types,
operation.action
andsoap.action
to thetransactionNameScheme
element. -
Validated Windows 2025.
Fixes
- Fixed issue with unclosed spans for HTTP client requests.
Trace.EndTraceHttpService()
parameters are now reported as key-values on the corresponding span.
5.3.9 - February 20, 2025
New features and improvements
-
Moved default logging directory on Windows to
C:\ProgramData\SolarWinds\APM\dotnet\logs
to align with logging directory of other SolarWinds products. -
Added new environment variables:
SW_APM_AGENT
andSW_APM_IIS_INSTRUMENTATION
. TheSW_APM_AGENT
environment variable can be used to enable non-IIS processes for instrumentation without needing to update thesolarwinds_apm.config
file. -
Introduced ability to add custom instrumentation spans using configuration.
-
Added ability to configure which span attribute(s) should be used as the transaction name for a request.
Fixes
- Fixed minor issue with context handling in IIS hosted WCF services.
2024 updates
2023 updates
2022 updates
Legal notices
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