[Identity] Deprecate attributes related to SharedTokenCacheCredential (Azure#51645)

* Deprecate `VisualStudioCodeTenantId` and `SharedTokenCacheUsername` attributes

* Export API

* Update sdk/identity/Azure.Identity/src/Credentials/DefaultAzureCredentialOptions.cs

Co-authored-by: Scott Addie <[email protected]>

* Export API

* Update changelog

* Apply suggestions from code review

Co-authored-by: Scott Addie <[email protected]>

* Update changelog

---------

Co-authored-by: Scott Addie <[email protected]>

Author: JonathanCrd

sdk/identity/Azure.Identity/CHANGELOG.md

@@ -12,12 +12,15 @@
   - `SharedTokenCacheCredential` class is marked as `[Obsolete]` and `[EditorBrowsable(EditorBrowsableState.Never)]`
   - `SharedTokenCacheCredentialOptions` class is marked as `[Obsolete]` and `[EditorBrowsable(EditorBrowsableState.Never)]`
   - `DefaultAzureCredentialOptions.ExcludeSharedTokenCacheCredential` property is marked as `[Obsolete]` and `[EditorBrowsable(EditorBrowsableState.Never)]`
+  - `SharedTokenCacheUsername` property is marked as `[Obsolete]` and `[EditorBrowsable(EditorBrowsableState.Never)]`
   - `SharedTokenCacheCredential` is no longer included in the `DefaultAzureCredential` authentication flow
 
 ### Bugs Fixed
 
 ### Other Changes
 
+- Added the `EditorBrowsable(Never)` attribute to property `VisualStudioCodeTenantId` as `TenantId` is preferred. The `VisualStudioCodeTenantId` property exists only to provide backwards compatibility.
+
 ## 1.15.0-beta.1 (2025-07-17)
 
 ### Features Added

sdk/identity/Azure.Identity/api/Azure.Identity.net8.0.cs

@@ -218,8 +218,11 @@ public DefaultAzureCredentialOptions() { }
         public Azure.Core.ResourceIdentifier ManagedIdentityResourceId { get { throw null; } set { } }
         [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
         public string SharedTokenCacheTenantId { get { throw null; } set { } }
+        [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
+        [System.ObsoleteAttribute("SharedTokenCacheCredential is deprecated. Consider using other dev tool credentials, such as VisualStudioCredential.")]
         public string SharedTokenCacheUsername { get { throw null; } set { } }
         public string TenantId { get { throw null; } set { } }
+        [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
         public string VisualStudioCodeTenantId { get { throw null; } set { } }
         [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
         public string VisualStudioTenantId { get { throw null; } set { } }

sdk/identity/Azure.Identity/api/Azure.Identity.netstandard2.0.cs

@@ -215,8 +215,11 @@ public DefaultAzureCredentialOptions() { }
         public Azure.Core.ResourceIdentifier ManagedIdentityResourceId { get { throw null; } set { } }
         [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
         public string SharedTokenCacheTenantId { get { throw null; } set { } }
+        [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
+        [System.ObsoleteAttribute("SharedTokenCacheCredential is deprecated. Consider using other dev tool credentials, such as VisualStudioCredential.")]
         public string SharedTokenCacheUsername { get { throw null; } set { } }
         public string TenantId { get { throw null; } set { } }
+        [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
         public string VisualStudioCodeTenantId { get { throw null; } set { } }
         [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
         public string VisualStudioTenantId { get { throw null; } set { } }

sdk/identity/Azure.Identity/src/Credentials/DefaultAzureCredentialOptions.cs

@@ -150,6 +150,7 @@ public string VisualStudioTenantId
         /// <see cref="VisualStudioCodeCredential"/>. The default is null and will authenticate users to their default tenant.
         /// The value can also be set by setting the environment variable AZURE_TENANT_ID.
         /// </summary>
+        [EditorBrowsable(EditorBrowsableState.Never)]
         public string VisualStudioCodeTenantId
         {
             get => _visualStudioCodeTenantId.Value;
@@ -183,6 +184,8 @@ public string VisualStudioCodeTenantId
         /// the cache, the SharedTokenCacheCredential won't be used for authentication.
         /// Defaults to the value of environment variable <c>AZURE_USERNAME</c>.
         /// </remarks>
+        [Obsolete("SharedTokenCacheCredential is deprecated. Consider using other dev tool credentials, such as VisualStudioCredential.")]
+        [EditorBrowsable(EditorBrowsableState.Never)]
         public string SharedTokenCacheUsername { get; set; } = EnvironmentVariables.Username;
 
         /// <summary>
@@ -302,7 +305,9 @@ public string VisualStudioCodeTenantId
                 dacClone._sharedTokenCacheTenantId = _sharedTokenCacheTenantId;
                 dacClone._visualStudioTenantId = _visualStudioTenantId;
                 dacClone._visualStudioCodeTenantId = _visualStudioCodeTenantId;
+#pragma warning disable CS0618 // Type or member is obsolete
                 dacClone.SharedTokenCacheUsername = SharedTokenCacheUsername;
+#pragma warning restore CS0618 // Type or member is obsolete
                 dacClone.InteractiveBrowserCredentialClientId = InteractiveBrowserCredentialClientId;
                 dacClone.WorkloadIdentityClientId = WorkloadIdentityClientId;
                 dacClone.ManagedIdentityClientId = ManagedIdentityClientId;