4.51.0

New Features

• Simplified managed identity API. Use ManagedIdentityApplicationBuilder to create a IManagedIdentityApplication and call AcquireTokenForManagedIdentity. See 3970 and wiki.
• Added StopLongRunningProcessInWebApiAsync which allows to remove cached tokens based on a long-running OBO key. See 3346 and wiki.

Bug Fixes

• InitiateLongRunningProcessInWebApi will now always acquire new tokens from AAD without checking the token cache first. See 3825.
• When using preview Windows broker, MSAL will correctly handle the transitive reference to Microsoft.Identity.Client.NativeInterop. Any explicit references to Microsoft.Identity.Client.NativeInterop in projects also referencing MSAL should be removed. See 3964.
• Fixed preview Windows broker throwing a signed out exception when calling AcquireTokenSilent after acquiring token using the Username/Password flow. See 3916 and See 3961.

4.50.0

New Features

• Extended managed identity experimental functionality with support for Azure Cloud Shell. See 3832.
• Added support for PII logging for WAM preview. See 3845, 3822.

Bug Fixes

• Fixed JSON serialization issues for apps running on .NET 7. See 3892.
• Improved logging performance to only create logs when a specified log level is enabled. See 3901.
• Fixed Unable to load DLL 'msalruntime' exception for apps that use WAM preview and are packaged as MSIX. See 3740.
• WAM preview now honors the login hint. See 3301 and WAM docs.
• WAM preview now allows to sign in with an account different from the provided login hint. See 3929.
• Fixed an ApiContractViolation exception in WAM preview when signing out. See 3685.
• MSAL now allows passing no scopes when using WAM preview. See 3675.
• When broker is enabled, MSAL will now use the refresh token from the broker instead of a locally cached one. See 3613.
• Added a more descriptive error message when combined flat user and app cache is used. Use a partitioned token cache (for ex. distributed cache like Redis) or separate files for app and user token caches. See 3218.
• Updated logs to clarify that managed identity correlation ID differs from MSAL one. See #3908.
• Fixed an occasional cryptographic exception by removing the RSA public key size check - AAD is better suited to handle this verification. See 3896.
• Fixed JSON parsing errors when receiving an error token response. See 3883.
• Added better error handling when receiving WS-Trust responses. See 3614.
• WithAuthority methods on the request builders are hidden. Use either WithTenantId on the request builders or WithAuthority only on the application builder. See #2929.
• Deprecated IsBrokerAvailable method on mobile platforms. Applications should rely on the library automatically falling back to a browser if the broker is not available. See 3320.
• Deprecated unused extended expiry API. See 1377.

4.49.1

New Features

• Extended managed identity experimental functionality with support for Azure Arc. See 3862

Bug Fixes

• Updated the Broker package to use Microsoft.Identity.Client.NativeInterop 0.13.3 to resolve crash related to garbage collection when using new WAM broker preview. See 3868
• Disabled additional logging in new WAM broker introduced in MSAL 4.49.0. See 3875

4.49.0

New Features

• MSAL will now use <region>.login.microsoft.com when using regional ESTS-R for public cloud. See 3252
• Added support for acquiring Work and School accounts when calling GetAccounts using the new Broker preview. See 3458
• Added the ability to disable Instance Discovery/Authority validation using WithInstanceDiscovery(bool enableInstanceDiscovery). See 3775
• Added new APIs to acquire authentication data from WWW-Authenticate and Authentication-Info request headers. This will provide additional support for Proof-of-Possession. See 3026

Experimental Features

• Managed identities for Azure resources provide Azure services with an automatically managed identity in Azure Active Directory. You can use this identity to authenticate to any service that supports Azure AD authentication, without having credentials in your code. MSAL now supports acquiring token for managed identities for Azure App Services and Azure Virtual Machines. Use WithManagedIdentity() method on the AcquireTokenForClient API to get an MSI token. This is an experimental feature and may change in the future versions of MSAL. See 3754 and 3829

Supportability

• Enabled more logging for new WAM broker. See 3575

Bug Fixes

• Optimized MSAL cache key logic to improve performance. See 3393

4.48.1

Supportability

• Fixes an internal (Microsoft 1P only) MSA-PT issue for the new WAM preview broker. See VS#1809364 and VS#1643652

Bug Fixes

• Added header title to the Account Picker for the new WAM preview broker. See 3803.

4.48.0

New Features

• Removed support for deprecated net5.0-windows10.0.17763.0 target. See 3770 and note below.
• Added support for net6.0 and net6.0-windows10.0.17763.0 targets. See 3682 and note below.
• Removed support for old xamarinmac20 target. See 3722.
• WithProofOfPossession for public client applications is now generally available. See 3767.
• Added telemetry to log Proof-of-Possession usage. See 3718.
• Exposed tenant profiles for all authorities which are tenanted (B2C and dSTS). See 3703.
• Now logging MSAL version to common telemetry client. See 3745.
• Updated guidance on retry policies. See Retry Policy wiki and 3561.

Bug Fixes

• Fixed a NullReferenceException related to authority URLs when calling AcquireTokenSilent with an Operating System account in apps using WAM. See 3769.
• Fixed a NullReferenceException when using preview broker and calling AcquireTokenSilent with MSA account and MSA-PT enabled. See 3743.
• Added an Exported attribute to Android activities to be compliant with Android OS 12.1 (API 32) and above requirements. See 3680.
• Fixed incorrect home account details in AuthenticationResult of AcquireTokenByRefreshToken. See 3736.

.NET 5 and .NET 6 public client applications

If you have a Windows application which targets net5.0, net5.0-windows, net5.0-windowsX, net6.0, or net6.0-windows and would like to use either WAM or embedded browser, you must change the app target to at least net6.0-windows10.0.17763.0. System browser works on all of the above targets.
The recommendation is to use new Windows broker preview, as it offers better experience than current WAM implementation and will be generally available in the near future. If you want to try the new broker preview, install the NuGet package Microsoft.Identity.Client.Broker and call the .WithBrokerPreview() method. For details, see https://aka.ms/msal-net-wam.

4.47.2

New Features

• Hide legacy API's that are available only to internal Microsoft only (1P) applications. See 3670.
• Soft deprecate WithAuthority API on AcquireTokenXXX methods. Instead use WithTenantId or WithTenantIdFromAuthority, or WithB2CAuthority for B2C authorities. See #3716
• Logging error codes to MSAL Telemetry. See 3595
• Add more logging around client creds and claims. See 3707.
• Improve extensibility APIs to support new POP

Bug Fixes

• Improved error messages when new preview broker exceptions are thrown. #3696
• MSAL will now throw an exception if no scopes are passed for the new preview Broker or for B2C scenarios. See #3675
• Removed .NET 6 MacCatalyst target because MSAL.NET doesn't currently support it. See #3693
• Throw an exception when new WAM DLLs are not loaded when invoking the new WAM preview broker. See #3699

4.47.1

Fixes an internal (Microsoft 1P only) NuGet feed issue. See #3689

4.47.0

New Features

• Support for .NET MAUI is now generally available for iOS, Windows and Android targets. The package also works with UWP. Refer to MauiStatus.md for details.
• The new MSAL logging feature is now generally available. WithExperimentalFeatures() is no longer required when calling WithLogging(). See 3548, wiki.
• Adding IsProofOfPosessionSupportedByClient api to be used to determine if the current broker is able to support Proof-of-Posession. See 3496
• Adding ability to turn off the default retry-once policy on 5xx errors. See 2877
• Adds new public builder API accepting instances of ITelemetryClient. See 3533.
• Added logic to log some acquire token data via the new telemetry pipeline. See 3534.

Bug Fixes

• MSAL will now throw an exception if no scopes are passed when the new preview broker is invoked. See #3654 and #3677
• MsalServiceException.IsRetryable is now correctly set. See #3661
• Added extra logging in Preview Broker RemoveAccountAsync API. See #3658
• Added a check for null account in Preview Broker RemoveAccountAsync API. See #3657
• AuthenticationResult now shows correct authority for multi-cloud requests using WAM. See #3637
• Adding null IdentityLogger to prevent null reference exception when using cache logger. See #3678

4.46.2

New Features

• WAM Authentication Library now explicitly supports .NET 4.6.2. See #3539

Bug Fixes

• Fixed 'Authenticator Factory has already been started` exception in new MSAL WAM preview. See #3604
• Added back missing .NET Standard 2.0 target to MSAL.NativeInterop package. See #3612
• [Resilience] Changed to an improved implementation of HTTP client factory on .NET Framework to improve resiliency (for ex. by reducing the amount of request timeouts). See #3546
• Logging additional exceptions to telemetry. See #3547