Changelog

Unreleased

1.15.2

Released 2026-Apr-21

Updated OpenTelemetry core component version(s) to 1.15.3. (#4166)

1.15.1

Released 2026-Feb-18

Fixed race condition in MsgPackTraceExporter where concurrent threads calling SerializeActivity would corrupt the prepopulatedFields dictionary, leading to "Bad forward protocol format" errors. (#3881)

1.15.0

Released 2026-Jan-21

Add ResourceFieldNames to filter resource attributes to send to Geneva (#3552, #3646)
Updated OpenTelemetry core component version(s) to 1.15.0. (#3721)

1.14.0

Released 2025-Nov-13

Add support for .NET 10.0. (#2822)
Update .NET 10.0 NuGet package versions from 10.0.0-rc.2.25502.107 to 10.0.0. (#3403)
Updated OpenTelemetry core component version(s) to 1.14.0. (#3403)

1.13.1

Released 2025-Oct-29

Support for specifying resource attributes, including service.name, service.instanceId, and custom attributes. (#3214)
Allow custom string size limit in custom fields. (#3360)

1.13.0

Released 2025-Oct-13

Updated OpenTelemetry core component version(s) to 1.13.1. (#3218)

1.13.0-alpha.1

Released 2025-Jun-07

Experimental: Added an option for configuring a custom string size limit in the MessagePack serializer. The maximum string length, in characters, can be set using the PrivatePreviewLogMessagePackStringSizeLimit=<CharCount> connection string parameter. (#2813)
Add httpUrl for HTTP server spans mapped from multiple attributes. (#2818)

1.12.0

Released 2025-May-06

Updated OpenTelemetry core component version(s) to 1.12.0. (#2725)

1.11.3

Released 2025-Apr-22

Fixed an issue where accessing an unset AFDCorrelationId in RuntimeContext would throw unhandled exceptions. (#2708)

1.11.2

Released 2025-Apr-16

Added support for enriching logs with AFDCorrelationId when present in RuntimeContext. This can be enabled via the PrivatePreviewEnableAFDCorrelationIdEnrichment=true connection string parameter. (#2698)

1.11.1

Released 2025-Mar-05

Updated OpenTelemetry core component version(s) to 1.11.2. (#2582)

1.11.0

Released 2025-Feb-03

Added support for exporting exception stack traces using Exception.StackTrace. This can be enabled via the ExceptionStackExportMode.ExportAsStackTraceString enum. Applicable only to the LogExporter. (#2422)
Updated OpenTelemetry core component version(s) to 1.11.1. (#2477)

1.10.0

Released 2024-Nov-18

Drop support for .NET 6 as this target is no longer supported. (#2117)
Added support for exporting metrics on Linux when OTLP protobuf encoding is enabled via the PrivatePreviewEnableOtlpProtobufEncoding=true connection string switch. PrivatePreviewEnableOtlpProtobufEncoding=true is now supported on both Windows and Linux.
- user_events transport: #2113.
- Unix domain socket transport: #2261.
For configuration details see: OtlpProtobufEncoding.
Update OpenTelemetry SDK version to 1.10.0. (#2317)

1.9.0

Released 2024-Jun-21

Exemplars are now supported as a stable feature. Please note that OpenTelemetry SDK has Exemplars disabled by default. Check OpenTelemetry Metrics docs to learn how to enable them.

1.9.0-rc.2

Released 2024-Jun-17

Update GenevaTraceExporter to export activity.TraceStateString as the value for Part B traceState field for Spans when the IncludeTraceStateForSpan option is set to true. This is an opt-in feature and the default value is false. Note that this is for Spans only and not for LogRecord. (#1850)
Updated OpenTelemetry core component version(s) to 1.9.0. (#1888)

1.9.0-rc.1

Released 2024-Jun-12

Update OpenTelemetry SDK version to 1.9.0-rc.1. (#1869)
Added LoggerProviderBuilder.AddGenevaLogExporter registration extensions. Added TracerProviderBuilder.AddGenevaTraceExporter() registration extension. (#1880)

1.9.0-alpha.1

Released 2024-May-22

Update OpenTelemetry SDK version to 1.9.0-alpha.1. (#1834)

1.8.0

Released 2024-May-15

Update OpenTelemetry SDK version to 1.8.1. (#1798)

1.8.0-rc.2

Released 2024-May-13

Experimental (pre-release builds only): Add support for exporting exemplars when OTLP protobuf encoding is enabled via PrivatePreviewEnableOtlpProtobufEncoding=true in the connection string. (#1703)
Add support for exporting exponential histograms when OTLP protobuf encoding is enabled via PrivatePreviewEnableOtlpProtobufEncoding=true in the connection string. (#1705)

1.8.0-rc.1

Released 2024-May-02

Update OpenTelemetry SDK version to 1.8.0-rc.1. (#1689)

1.8.0-beta.1

(This version has been unlisted due to incorrect dependency on stable sdk version 1.8.1 that prevents ability to use exemplars)

Released 2024-Apr-23

Fix a bug in GenevaMetricExporter where the MetricEtwDataTransport singleton is disposed. (#1537)
Update OpenTelemetry SDK version to 1.8.1. (#1668)
Add OTLP protobuf encoding support for metric exporter in Windows environment. Use PrivatePreviewEnableOtlpProtobufEncoding=true in the connection string to opt-in. (#1596, #1626, #1629, #1634)
Native AOT compatibility. (#1666)

1.7.0

Released 2023-Dec-11

Update OpenTelemetry SDK version to 1.7.0. (#1486)

1.7.0-rc.1

Released 2023-Dec-05

Update Part B mapping to add Http related tags based on the new Semantic Conventions. (#1402)
Fix serialization bug in TldTraceExporter and TldLogExporter when there are no Part C fields. (#1396)
Fix a serialization issue for TldTraceExporter and TldLogExporter when any non-primitive types have to be serialized for env_properties. (#1424)
Add net8.0 target. (#1329)
Update OpenTelemetry SDK version to 1.7.0-rc.1. (#1329)

1.7.0-alpha.1

Released 2023-Sep-22

Allow overriding the Part B "name" field value in GenevaLogExporter. (#1367)

1.6.0

Released 2023-Sep-09

Update OpenTelemetry SDK version to 1.6.0. (#1346)

1.6.0-rc.1

Released 2023-Aug-28

Update OpenTelemetry SDK version to 1.6.0-rc.1. (#1329)

1.6.0-alpha.1

Released 2023-Jul-12

Update OpenTelemetry SDK version to 1.6.0-alpha.1. (#1264)
Add back support for exporting Exemplar. (#1264)

1.5.1

Released 2023-Jun-29

Update OpenTelemetry SDK version to 1.5.1. (#1255)

1.5.0

Released 2023-Jun-14

Important Note: Starting 1.5.0 version, GenevaExporter uses a newer format for exporting metrics. Please use >= v2.2.2023.316.006 version of the MetricsExtension if you are using the metric exporter.
Update OpenTelemetry SDK version to 1.5.0. (#1238)
Removed support for exporting Exemplars. This would be added back in the 1.6.* prerelease versions right after 1.5.0 stable version is released. (#1238)
Add named options support for GenevaTraceExporter and GenevaMetricExporter. (#1218)
Add a new overload for AddGenevaMetricExporter without any parameters to avoid warning RS0026. (#1218)
Fix the issue of running into the ArgumentException: An instance of EventSource with Guid edc24920-e004-40f6-a8e1-0e6e48f39d84 already exists. when using multiple instances of GenevaMetricExporter. (#1225)

1.5.0-rc.1

Released 2023-Jun-05

Fix an issue with getting sanitized category name in pass-through table name mapping cases for TldLogExporter. (#1175)
TldLogExporter to export SpanId value in ext_dt_spanId field instead of TraceId value. (#1184)
Add support for abstract domain sockets. (#1199)
Update OpenTelemetry SDK version to 1.5.0-rc.1. (#1210)

1.5.0-alpha.3

Released 2023-Apr-19

TldLogExporter to export eventId.Id as a Part B field instead of Part C field. (#1134)
Update GenevaLogExporter to export eventId.Name as the value for Part A name field when the EventNameExportMode option is set to ExportAsPartAName. (#1135)

1.4.1

Released 2023-Mar-29

Relaxed table name mapping validation rules to restore the previous behavior from version 1.3.0. (#1120)

1.5.0-alpha.2

Released 2023-Mar-29

Fix a bug where metrics without exemplars were not getting exported. (#1099)
Relaxed table name mapping validation rules to restore the previous behavior from version 1.3.0. (#1109)
Add support for exporting metrics to more than a single account/namespace combination using a single GenevaMetricExporter instance. Users can now export individual metric streams to:
- An account of their choice by adding the dimension _microsoft_metrics_account and providing a string value for it as the account name.
- A metric namespace of their choice by adding the dimension _microsoft_metrics_namespace and providing a string value for it as the namespace name. (#1111)
Fix a bug in TldTraceExporter for incorrect serialization of special tags. (#1115)

1.5.0-alpha.1

Released 2023-Mar-13

Changed the behavior of Unix domain socket connection at startup. Before this change, the exporter initialization would throw exception if the target Unix Domain Socket does not exist. After this change, the exporter initialization would return success and the exporting background thread will try to establish the connection. (#935)
Update OpenTelemetry SDK version to 1.5.0-alpha.1.
Update GenevaMetricExporter to use TLV format serialization.
Add support for exporting exemplars. (#1069)

1.4.0

Released 2023-Feb-27

Update OpenTelemetry to 1.4.0 (#1038)
Add DisableMetricNameValidation connection string flag for controlling metric name validation performed by the OpenTelemetry SDK. (#1006)

1.4.0-rc.4

Released 2023-Feb-13

Update OpenTelemetry to 1.4.0-rc.4 (#990)

1.4.0-rc.3

Released 2023-Feb-08

Update OpenTelemetry to 1.4.0-rc.3 (#944)

1.4.0-rc.2

Released 2023-Jan-30

Update OpenTelemetry to 1.4.0-rc.2 (#880)
Add TldTraceExporter and TldLogExporter. Use "PrivatePreviewEnableTraceLoggingDynamic=true" in the connection string to use these exporters. (#662) (#874)
Add support for configuring BatchActivityExportProcessor parameters (via environment variables) used by GenevaTraceExporter in Linux. (#925)

1.4.0-rc.1

Released 2022-Dec-19

Update OpenTelemetry to 1.4.0-rc.1 (#820)
Add support in logs for prefix-based table name mapping configuration. #796
Updated the trace exporter to use the new performance APIs introduced in System.Diagnostics.DiagnosticSource v7.0. #838
Avoid allocation when serializing scopes. (#818)

1.4.0-beta.6

Released 2022-Dec-09

Added support for DateTimeOffset. (#797)
Fix the overflow bucket value serialization for Histogram. (#805)
Fix EventSource logging. (#813)
Update MessagePackSerializer to use BinaryPrimitives to serialize scalar types more efficiently by avoiding repeated bound checks. Add support for serializing ISpanFormattable types. (#803)

1.3.1

Released 2022-Dec-07

Fix the overflow bucket value serialization for Histogram. (#807)

1.4.0-beta.5

Released 2022-Nov-21

Update OpenTelemetry to 1.4.0-beta.3 (#774)

1.4.0-beta.4

Released 2022-Oct-28

Updated export logic for scopes
- Users upgrading from 1.4.0-beta.1, 1.4.0-beta.2 or 1.4.0-beta.3 to this version will see a breaking change
- Export scopes which have a non-null key as individual columns (each key-value pair from the scopes is exported as its own column; these columns would also be taken into consideration when the CustomFields option is applied).
- When using formatted strings for scopes, the templated string ("{OriginalFormat"}) will not be exported. #736

1.4.0-beta.3

Released 2022-Oct-20

Add support for exporting UpDownCounter and ObservableUpDownCounter. #685
Export MetricType.LongGauge as a double metric as it might return negative values. #721
Add support for exporting exception stack. #672
Change the default MetricExportInterval from 20 seconds to 60 seconds. #722

1.4.0-beta.2

Released 2022-Oct-17

The option TableNameMappings of GenevaExporterOptions will not support string values that are null, empty, or consist only of white-space characters. It will also not support string values that contain non-ASCII characters. 646
Update OpenTelemetry SDK version to 1.4.0-beta.2. Add support for exporting Histogram Min and Max. If the histogram does not contain min and max, the exporter exports both the values as zero. #704

1.4.0-beta.1

Released 2022-Aug-01

1.3.1-alpha.0.5 (unlisted due to incorrect version)

Released 2022-Jul-29

Add support for exporting ILogger scopes. 545

1.3.0

Released 2022-Jul-28

Supports OpenTelemetry.Extensions.Hosting based configuration for GenevaMetricExporter. 397
Update OpenTelemetry SDK version to 1.3.0. 427
Remove support for .NET Framework 4.6.1. The minimum .NET Framework version supported now is .NET 4.6.2. 441
Fix the incorrect ExportResult issue on Linux: 422 by throwing any exception caught by UnixDomainSocketDataTransport.Send so that Export methods cn catch it and correctly set ExportResult to ExportResult.Failure. 444
The option PrepopulatedFields of GenevaExporterOptions will only support values of type: bool, byte, sbyte, short, ushort, int, uint, long, ulong, float, double, and string. It will also not accept null values. 514 537
The option MetricExportIntervalMilliseconds of GenevaMetricExporterOptions will not accept a value less than 1000. 527
Remove support for exporting ILogger scopes that was added in 1.3.0-beta.2 version. 541

1.3.0-beta.2

Released 2022-Jun-03

Add support for exporting ILogger scopes. 390

1.3.0-beta.1

Released 2022-May-27

Enable PassThru TableNameMappings using the logger category name. 345
Throw exception when TableNameMappings contains a null value. 322
TraceExporter bug fix to not export non-recorded Activities. 352
Add support for the native Activity properties Status and StatusDescription. 359
Allow serialization of non-ASCII characters for LogRecord.Exception.GetType().FullName. 375

1.2.6

Released 2022-Apr-21

Set GenevaMetricExporter temporality preference back to Delta. 323

1.2.5 Broken

Released 2022-Apr-20

Note: This release was broken due to the GenevaMetricExporter using a TemporalityPreference of Cumulative instead of Delta, it has been unlisted from NuGet. 303 is the PR that introduced this bug to GenevaMetricExporterExtensions.cs

Update OpenTelemetry SDK version to 1.2.0. 319

1.2.4 Broken