4.59.0

New Features

• Removed support for deprecated Xamarin.Android 9 and Xamarin.Android 10 frameworks. MSAL.NET packages will no longer include monoandroid90 and monoandroid10.0 binaries and instead include monoandroid12.0. Xamarin.Android apps should now target framework version 12 (corresponding to Android API level 31) or above. See 3530.
• Removed support for deprecated .NET 4.5 framework. MSAL.NET packages will no longer include net45 binary. Existing applications should target at least .NET 4.6.2. See 4314.

Bug Fixes

• When public client apps persist cache data on Linux platforms, exceptions are now thrown, instead of just logged. This behavior is now consistent with Windows and Mac cache accessors. See 4493.
• Downgraded System.Diagnostics.DiagnosticSource dependency to 6.0.1 from 7.0.2 to enable apps to run in .NET 6 in-process Azure Functions. Added extra checks to prevent crashing if OpenTelemetry dependencies cannot be used in the app's runtime. See 4456.
• MSAL now throws MsalServiceException instead of MsalManagedIdentityException in managed identity flows. See 4483.
• Background proactive token refresh operation can now be cancelled using the cancelation token passed into the parent acquire token call. See 4473.
• Fixed SemaphoreFullException happening in managed identity flows. See 4472.
• Improved exception messages when using non-RSA certificates. See 4407.
• Fixed a scenario when the same tokens are cached under different cache keys when an identity provider sends scopes in a different order. See 4474.

4.58.1

New Features

• Added WithForceRefresh support for silent flows using the Windows broker. See 4457.

Bug Fixes

• Fixed a bug when a x-ms-pkeyauth HTTP header was incorrectly sent on Mac and Linux platforms. See 4445.
• Fixed an issue with client capabilities and claims JSON not being merged correctly. See 4447.
• MSAL can now be used in .NET 8 applications which use native AOT configuration binder source generator. See 4453.
• Fixed an issue with sending an incorrect operating system descriptor in silent flows on Mac. See 4444.

4.58.0

New Features

• Removed support for deprecated .NET 4.6.1 framework and added .NET 4.6.2 support. MSAL.NET packages will no longer include net461 binary. Existing .NET 4.6.1 apps will now reference .NET Standard 2.0 MSAL binary. See 4315.
• MSAL.NET repository now supports Central Package Management. See 3434.
• Added instrumentation to collect metrics with Open Telemetry. Aggregated metrics consist of successful and failed token acquisition calls, total request duration, duration in cache, and duration in a network call. See 4229.

Bug Fixes

• Resolved the issue with dual-headed accounts that share the same UPN for both, Microsoft (MSA) and Microsoft Entra ID (Azure AD) accounts. See 4425.
• MSAL now correctly falls back to use local cache if broker fails to return a result for AcquireTokenSilent calls. See 4395.
• Fixed a bug when the cache level in the telemetry was not correctly set to L1 Cache when in-memory cache was used. See 4414.
• Deprecated WithAuthority on the request builders. Set the authority on the application builders. Use WithTenantId or WithTenantIdFromAuthority on the request builder to update the tenant ID. See 4406.
• Fixed an issue with the Windows broker dependencies when the app was targetting NativeAOT on Windows. See 4424.
• Updated Microsoft.Identity.Client.NativeInterop reference to version 0.13.14, which includes bug fixes and stability improvements. See 4439.

4.57.0

New Features

• Removed support for deprecated .NET Core 2.1 framework. MSAL.NET packages will no longer include netcoreapp2.1 binary. Existing .NET Core 2.1 apps will now reference .NET Standard 2.0 MSAL binary. See 4313.
• Added additional logging in the cache. See 3957.
• Removed unused HTTP telemetry data (x-client-info). See 4167.
• Updated Microsoft.Identity.Client.NativeInterop reference to version 0.13.12, which includes bug fixes and stability improvements. See 4374.

Bug Fixes

• Added simple retry logic for signing client assertions failures. See 4366.
• Fixed inconsistencies in throwing exceptions for badly formatted authorities. Now MSAL will always throw an ArgumentException if an authority is in incorrect format (e.g., doesn't start with HTTPS, has spaces, etc.) See 4280.
• Included missing Windows broker-related exception data when serializing MSAL exceptions. See 4371.
• Fixed a crash when using managed identity and provided resource is null. See 4332.
• Removed duplicate Windows broker logs. See 4353.

4.56.0

New Features

• MSAL.NET cache extensions (Microsoft.Identity.Client.Extensions.Msal) package has been moved to the main MSAL.NET repository (where any new issues should be created). The package version has been increased to match the main MSAL version. Along with this move, support for .NET 4.5 and .NET Core 3.1 was removed and this package now only supports .NET Standard 2.0. Additionally, Microsoft.Identity.Client.Extensions.Adal has been deprecated. See 3152, 4330.
• Added AuthenticationResult.AuthenticationResultMetadata.Telemetry that currently contains telemetry from the Windows broker (WAM). See 4159.

Bug Fixes

• Added throttling logic for acquiring tokens for managed identity (using AcquireTokenForManagedIdentity and WithAppTokenProvider) to prevent the throttling exceptions thrown by the managed identity endpoints. See 4196.
• Enabled cache synchronization by default. This helps to keep the cache consistent when a singleton confidential client application (CCA) is used with enabled external token cache serialization. The cache synchronization has a negligible performance effect when CCA is created per request. See 4268.
• Fixed an authority validation error in interactive flows when an Active Directory Federation Services (ADFS) authority with a tenant ID was used. See 4272.
• Added clarity to the Windows broker logs. See 4318.

4.55.0

New Features

• A user assigned managed identity can now be specified using its object ID. 4215.

Bug Fixes

• WithTenantId now works with CIAM authorities. See 4191.
• Improved the error message when cache serialization fails. See 4206.
• Improved logging when using the Windows broker (WAM). See 4183.

4.54.1

New Features

• The client-side telemetry API (ITelemetryClient) is now generally available. See 3784.
• Added WithSearchInCacheForLongRunningProcess() modifier which allows InitiateLongRunningProcessInWebApi method to search in cache. This flag is intended only for rare legacy cases; for most cases, rely on the default behavior of InitiateLongRunningProcessInWebApi and AcquireTokenInLongRunningProcess. See 4124.

Bug Fixes

• WithTenantId can now be used with dSTS authorities to overwrite the tenant. See 4144, 4145.
• Fixed a bug in token serialization for rare cases when an ID token has no oid claim. See 4140.

4.54.0

New Features

• Acquiring tokens with managed identity is now generally available. See 4125 and documentation for managed identity in MSAL.NET.
• Updated the managed identity API to specify the identity type when creating an ManagedIdentityApplication. See 4114.
• When acquiring tokens with managed identity and using the default HTTP client, MSAL will retry the request for certain exception codes. See 4067.
• Adds MsalManagedIdentityException class that represents any managed identity related exceptions. It includes general exception information including the Azure source from which the exception originates. See 4041.
• MSAL will now proactively refresh tokens acquired with managed identity. See 4062.
• MSAL will now proactively refresh tokens acquired using AppTokenProvider API. See 4074.
• MsalException and derived exception classes now have a property AdditionalExceptionData, which holds any extra error information. Currently it is only populated for exceptions coming from the Windows authentication broker (WAM). See 4106.
• For HTTP telemetry. added a new telemetry ID for long-running on-behalf-of requests. See 4099.

Bug Fixes

• Fixed a JSON serialization issue in iOS apps that are built in release Ahead-Of-Time (AOT) compilation mode. See 4082.
• MSAL.NET package now references correct Microsoft.iOS version. See 4091.
• Microsoft.Identity.Client.Broker package can now be used in projects which rely on the older package.config. See 4108.
• Fixed a user_mismatch error when WithAccount is specified when acquiring tokens interactively and selecting a different account in the account picker. See 3991.

4.53.0

New Features

• Added support for CIAM authorities. See 3990

Bug Fixes

• Fixed issue where WAM is invoked for B2C authorities. MSAL will now fall back to the browser for this scenario. See 4072

4.52.0

New Features

• The improved experience using Windows broker (WAM) is now generally available for all desktop platforms, except UWP. See 3375, 3447.
• Acquiring Proof-of-Possession tokens on public desktop clients using WAM broker is now generally available. See 3992.
• The requirement for a specific Windows SDK version on .NET 6 platform has been removed, which should improve the package usage on .NET 6 platforms. MSAL.NET now targets a more general net6.0-windows instead of net6.0-windows10.0.17763.0. See 3986.
• Added support for non-Azure AD IdP's in client credential flows. Use WithGenericAuthority(authority). This is still an experimental API and may change in the future. See 4047, 1538.
• Added AuthenticationResult.AdditionalResponseParameters property bag with any extra parameters from the AAD response. This collection will also have spa_accountId parameter which can be used in brokered hybrid single-page application (SPA) scenarios. See 3994.