Microsoft Azure IoT SDKs for .NET Release 2025-12-11

Microsoft.Azure.Devices 1.41.0

• Allow for user to pass in timeout values for connection operations in the AMQP service client's c2d messaging APIs

https://www.nuget.org/packages/Microsoft.Azure.Devices/1.41.0

Microsoft Azure IoT SDKs for .NET Release 2024-11-21

Microsoft.Azure.Devices 1.40.0

• Allow for user to pass in custom scopes when using TokenCredential authentication
• Fix bug where opening service client with Amqp_WebSocket_Only throws ArgumentOutOfRangeException

https://www.nuget.org/packages/Microsoft.Azure.Devices/1.40.0

Microsoft Azure IoT SDKs for .NET LTS Patch Release 2024-03-29

Changes:

• Updated to use DotNetty 0.7.6

Release with new packages:

• Update to Microsoft.Azure.Devices.Client 1.36.10
• Update to Microsoft.Azure.Devices.Provisioning.Transport.Mqtt 1.14.4

Microsoft Azure IoT SDKs for .NET Release 2024-03-28

Changes:

• Updated to use DotNetty 0.7.6

Bug Fix:

• Fix bug where module client send batch fails if output name already set (#3441)

Release with new packages:

• Microsoft.Azure.Devices.Client 1.42.3
• Microsoft.Azure.Devices.Provisioning.Transport.Mqtt 1.17.5

Microsoft Azure IoT SDKs for .NET LTS patch Release 2023-12-20

This release is a patch for the Microsoft Azure IoT Hub SDK for .NET LTS patch Release 2023-01-24 LTS release.

Microsoft.Azure.Devices.Client 1.36.9

• Using 'Azure.Storage.Blobs' instead of 'WindowsAzure.Storage' (#3418)
• Removed support for .NET 451 (#3418)

Microsoft.Azure.Devices 1.31.6

• Using 'Azure.Storage.Blobs' instead of 'WindowsAzure.Storage' (#3418)
• Removed support for .NET 451 (#3418)

Microsoft Azure IoT SDKs for .NET Release 2023-12-20

Microsoft.Azure.Devices.Client 1.42.2
Security Updates:

• Using 'Azure.Storage.Blobs' instead of 'WindowsAzure.Storage' (#3414)

Microsoft Azure IoT SDKs for .NET Release 2023-12-11

Microsoft.Azure.Devices.Client 1.42.1

Security Updates:

• Update to latest newtonsoft.json library (#3403)
• Upgrade dotnetty to latest (#3401)
• Remove support for net451, netcore21, net5, upgrade azure core dependency, target net6 (#3400)

Bug fixes:

• Use local Newtonsoft settings when serializing/deserializing instead of assigning global settings (#3402)
• Log possibly unobserved exceptions in MQTT (#3319)

Microsoft.Azure.Devices 1.39.1

Security Updates:

• Update to latest newtonsoft.json library (#3403)
• Remove support for net451, netcore21, net5, upgrade azure core dependency, target net6 (#3400)

Bug fixes:

• Use local Newtonsoft settings when serializing/deserializing instead of assigning global settings (#3402)
• Log possibly unobserved exceptions in MQTT (#3319)

Microsoft.Azure.Devices.Shared 1.30.4
Security Updates:

• Update to latest newtonsoft.json library (#3403)
• Remove support for net451, netcore21, net5, upgrade azure core dependency, target net6 (#3400)

Bug fixes:

• Use local Newtonsoft settings when serializing/deserializing instead of assigning global settings (#3402)

Microsoft.Azure.Devices.Provisioning.Client 1.19.4
Security Updates:

• Update to latest newtonsoft.json library (#3403)
• Remove support for net451, netcore21, net5, upgrade azure core dependency, target net6 (#3400)

Bug fixes:

• Log possibly unobserved exceptions in MQTT (#3319)

Microsoft.Azure.Devices.Provisioning.Service 1.18.4
Security Updates:

• Update to latest newtonsoft.json library (#3403)
• Remove support for net451, netcore21, net5, upgrade azure core dependency, target net6 (#3400)

Bug fixes:

• Use local Newtonsoft settings when serializing/deserializing instead of assigning global settings (#3402)
• Log possibly unobserved exceptions in MQTT (#3319)

Microsoft.Azure.Devices.Provisioning.Transport.Amqp 1.16.6
Security Updates:

• Remove support for net451, netcore21, net5, upgrade azure core dependency, target net6 (#3400)

Microsoft.Azure.Devices.Provisioning.Transport.Http 1.15.4
Security Updates:

• Remove support for net451, netcore21, net5, upgrade azure core dependency, target net6 (#3400)

Microsoft.Azure.Devices.Provisioning.Transport.Mqtt 1.17.4
Security Updates:

• Upgrade dotnetty to latest (#3401)
• Remove support for net451, netcore21, net5, upgrade azure core dependency, target net6 (#3400)

Bug fixes:

• Log possibly unobserved exceptions in MQTT (#3319)

Microsoft.Azure.Devices.Provisioning.Security.Tpm 1.14.4
Security Updates:

• Update to latest newtonsoft.json library (#3403)
• Remove support for net451, netcore21, net5, upgrade azure core dependency, target net6 (#3400)

Bug fixes:

• Use local Newtonsoft settings when serializing/deserializing instead of assigning global settings (#3402)

Microsoft Azure IoT SDKs for .NET v2 Preview #7 Release 2023-08-17

This is the seventh preview of the v2 clients. You can read about the changes in this migration guide.

Relevant changes

• Direct method subscription not removed after disconnect by @tmahmood-microsoft in #3359

Microsoft Azure IoT SDKs for .NET v2 Preview #6 Release 2023-08-07

This is the sixth preview of the v2 clients. You can read about the changes in this migration guide.

Relevant changes

• Add OnBehalfOf authentication to V2 for edgehub by @patilsnr in #3353
• Make currentRetryCount consistent across IotHub and DPS by @patilsnr in #3355
• addresses supporting byte[] in direct methods and making TwinProperties able to be directly converted to json by @patilsnr in #3340
• [v2 - bug fix] Queue MQTT C2D messages if callback not set by @tmahmood-microsoft #3336
• Add comment explaining twin patch over edge isn't applied immediately by @abhipsaMisra in #3331
• Exception on passing different gateway hostnames through different inputs by @abhipsaMisra in #3330
• Remove default remote certificate callback by @timtay-microsoft in #3329
• Use gateway hostname from options for connection string flow by @abhipsaMisra in #3326
• Throw exception if IoT device module invokes an IoT edge module API by @abhipsaMisra in #3323
• Fix twin desired property payload conversion - MQTT by @tmahmood-microsoft in #3322
• Make DirectMethodPrequest.Payload to be settable by client applications by @abhipsaMisra in #3317
• Update service error codes by @drwill-ms in #3316
• Add code examples for public APIs in IotHubDeviceClient, IotHubModuleClient, IotHubBaseClient and retry policies by @brycewang-microsoft in #3308

Microsoft Azure IoT SDKs for .NET Release 2023-05-01

Microsoft.Azure.Devices.Client 1.42.0

• Apply JsonSerializerSettings to hub device (#3107)
• Set state to 'closed' when CloseAsync() is called (#3149)
• Ensure device client methods throw an object disposed exception (#3212)
• Allow users to pass in HttpClient to use for file upload operations (#3293)
• Update service error codes (#3315)
• Update reference to Microsoft.Azure.Devices.Shared nuget.

Bug fixes

• Stop the sas token refresh loop once CloseAsync() is called (#3021)
• Send an event in ReceiveMessageHandler before completing received message (#3116)
• Fix synchronization of semaphore in retry delegating handler (#3135)
• Allow a message to be sent to multiple outputs (#3203)
• Fix file upload HTTP client not handling DNS changes (#3266)
• Properly set connection lease timeout regardless of .NET target framework (#3279)
• Avoid NRE and disposed exceptions when closing client twice (#3312)

---

Microsoft.Azure.Devices 1.39.0

• Update error message for service reported errors (#3183)
• Update service error codes (#3315)
• Replace custom methods with string methods (#2801)
  • public static bool IsNullOrWhiteSpace(this string value) is removed due to duplicated functionality and users should use the native API on the string class instead - string.IsNullOrWhiteSpace(value).
• Update reference to Microsoft.Azure.Devices.Shared nuget.

Bug fixes

• Fix bug in date deserialization of device method response (#3097)
• Fix where HttpClientHelper should not log when logging is disabled (#3150)
• Fix NRE from GetExceptionCodeAsync (#3304)

---

Microsoft.Azure.Devices.Shared 1.30.3

Bug fixes

• Stop using JObject.Parse for json string in TwinCollection (#3113)

---

Microsoft.Azure.Devices.Provisioning.Client 1.19.3

• Apply JsonSerializerSettings to provisioning device (#3113)
• Update reference to Microsoft.Azure.Devices.Shared nuget.

---

Microsoft.Azure.Devices.Provisioning.Service 1.18.3

• Apply JsonSerializerSettings to provisioning service (#3113)
• Update reference to Microsoft.Azure.Devices.Shared nuget.

---

Microsoft.Azure.Devices.Provisioning.Transport.Amqp 1.16.5

• Update reference to Microsoft.Azure.Devices.Shared nuget.

---

Microsoft.Azure.Devices.Provisioning.Transport.Http 1.15.3

• Update reference to Microsoft.Azure.Devices.Shared nuget.

Bug fixes

• Fix DPS registration over HTTP with escaped characters in the registration Id (#3059)

---

Microsoft.Azure.Devices.Provisioning.Transport.Mqtt 1.17.3

• Update reference to Microsoft.Azure.Devices.Shared nuget.

---

Microsoft.Azure.Devices.Provisioning.Security.Tpm 1.14.3

• Update reference to Microsoft.Azure.Devices.Shared nuget.