3.62.0-preview.0

See changelog for details.

NuGet: https://www.nuget.org/packages/Microsoft.Azure.Cosmos/3.62.0-preview.0

3.61.0

See changelog for details.

NuGet: https://www.nuget.org/packages/Microsoft.Azure.Cosmos/3.61.0

3.61.0-preview.0

See changelog for details.

NuGet: https://www.nuget.org/packages/Microsoft.Azure.Cosmos/3.61.0-preview.0

3.60.0

See changelog for details.

NuGet: https://www.nuget.org/packages/Microsoft.Azure.Cosmos/3.60.0

Microsoft.Azure.Cosmos.FaultInjection 1.0.0-beta.1

Microsoft.Azure.Cosmos.FaultInjection 1.0.0-beta.1

NuGet: https://www.nuget.org/packages/Microsoft.Azure.Cosmos.FaultInjection/1.0.0-beta.1

Added

• #4867 FaultInjection: Adds method to add FaultInjection using CosmosClientBuilder
• #4989 Metadata Requests: Adds Metadata request support for FaultInjection
• #5264 ThinClient Compatibility: Adds compatibility with Thin Client Proxy
• #5510 Unauthorized Errors: Adds Unauthorized status codes
• #5677 FaultInjection: Adds XML documentation, stylecop.json, and updates test packages
• #5679 FaultInjection: Adds comprehensive unit test coverage

Fixed

• #5676 FaultInjection: Fixes naming typos and XML documentation
• #5675 FaultInjection: Fixes critical bugs for release 2
• #5678 FaultInjection: Refactors code quality improvements

3.60.0-preview.0

Added

• 5804 SemanticReranking: Adds Configurable Request Timeout

Fixed

• 5783 Container: Fixes SemanticRerankAsync TypeLoadException in derived classes

This preview release also includes all changes from 3.59.0.

See full changelog: https://github.com/Azure/azure-cosmos-dotnet-v3/blob/master/changelog.md#3600-preview0

3.59.0

3.59.0 - 2026-4-24

Features Added

• 5579 Change Feed Processor: Adds Lease container export support
• 5709 Performance: Adds caching for URL-encoded AAD authorization signature
• 5731 DNS dot-suffix: Adds TCP DNS dot-suffix for Direct mode to avoid Kubernetes ndots latency
• 5755 Exceptionless: Adds enabling exception less 400 status code
• 5756 Exceptionless: Adds enabling exception less 404/1002 status code
• 5757 Exceptionless: Adds enabling exception less 403
• 5779 Direct: Adds Direct package version bump to 3.42.4
• 5786 Region Availability: Adds missing regions from Direct 3.42.4
• 5788 Socket Handler: Adds HTTP/2 PING keep-alive to detect broken connections in pool

Bugs Fixed

• 5553 NativeDLLs: Fixes Conditionally include win-x64 native DLLs based on RuntimeIdentifier
• 5588 LINQ: Fixes memory leak from Expression.Compile() in all call sites
• 5617 ChangeFeedProcessor: Fixes first-change skip during initial startup by anchoring StartTime
• 5636 CosmosClientBuilder: Fixes self-referencing loop in GetSerializedConfiguration with STJ TypeInfoResolver
• 5748 Routing: Fixes GetOverlappingRanges CPU overhead from repeated JSON deserialization
• 5807 ChangeFeedProcessor: Fixes lease de-duplication for /partitionKey-partitioned lease containers
• 5778 DocumentClient: Fixes Potential Memory Leak By Properly Disposing GlobalPartitionEndpointManagerCore. This bug left the circuit breaker failback loop running indefinitely, leaking Task.Delay timers.

3.59.0-preview.0

3.59.0-preview.0 - 2026-3-20

Added

• 5502 VectorIndex Policy: Adds Support for QuantizerType in IndexingPolicy
• 5634 Semantic Reranking: Adds response body in semantic reranking error responses
• 5685 Read Consistency Strategy: Adds Read Consistency Strategy option for read requests
• 5447 Per Partition Automatic Failover: Adds Hub Region Processing Only While Routing Requests Failed with 404/1002 for single master accounts
• 5551 HPK: Adds internal CosmosClientOptions flag UseLengthAwareRangeComparer for length aware range comparer rollout
• 5582 Query: Adds ability to choose global vs local/focused statistics for FullTextScore
• 5610 Refactors N-Region Synchronous Commit feature to use IServiceConfigurationReaderVNext interface.
• 5693 ThinClient Integration: Adds Enable Multiple Http2 connection on SocketsHttpHandler
• 5614 ThinClient Integration: Adds support for QueryPlan in thinclient mode

Fixed

• 5597 CosmosClient: Fixes ObjectDisposedException message when client is disposed during request
• 5613 CrossRegionHedgingAvailabilityStrategy: Fixes ArgumentNullException race condition in hedging cancellation
• 5650 Batch: Fixes null ErrorMessage when promoting status from MultiStatus response
• 5651 Serializer: Fixes unsafe stream cast in FromStream
• 5697 ResourceThrottleRetryPolicy: Fixes cumulativeRetryDelay tracking when x-ms-retry-after-ms header is absent

3.58.0

3.58.0 - 2026-3-20

Added

• 5447 Per Partition Automatic Failover: Adds Hub Region Processing Only While Routing Requests Failed with 404/1002 for single master accounts
• 5551 HPK: Adds internal CosmosClientOptions flag UseLengthAwareRangeComparer for length aware range comparer rollout
• 5582 Query: Adds ability to choose global vs local/focused statistics for FullTextScore
• 5610 Refactors N-Region Synchronous Commit feature to use IServiceConfigurationReaderVNext interface.
• 5693 ThinClient Integration: Adds Enable Multiple Http2 connection on SocketsHttpHandler
• 5614 ThinClient Integration: Adds support for QueryPlan in thinclient mode

Fixed

• 5597 CosmosClient: Fixes ObjectDisposedException message when client is disposed during request
• 5613 CrossRegionHedgingAvailabilityStrategy: Fixes ArgumentNullException race condition in hedging cancellation
• 5650 Batch: Fixes null ErrorMessage when promoting status from MultiStatus response
• 5651 Serializer: Fixes unsafe stream cast in FromStream
• 5697 ResourceThrottleRetryPolicy: Fixes cumulativeRetryDelay tracking when x-ms-retry-after-ms header is absent

3.56.0-preview.1

3.56.0-preview.1 - 2025-3-10

Fixed

-5613 CrossRegionHedgingAvailabilityStrategy: Fixes ArgumentNullException race condition in hedging cancellation