[Hosted Agents] TypeLoadException: UserInputRequestContent not found after Microsoft.Agents.AI 1.0.0 upgrade

[rogerbarreto]

Description

After upgrading to Microsoft.Agents.AI 1.0.0 (GA), Azure.AI.AgentServer.AgentFramework 1.0.0-beta.11 throws a TypeLoadException because it still references UserInputRequestContent from Microsoft.Extensions.AI.Abstractions, which was removed/renamed in MEAI 10.4.0.

Related upstream issue: microsoft/agent-framework#5076

Exception

System.TypeLoadException: Could not load type 'Microsoft.Extensions.AI.UserInputRequestContent'
from assembly 'Microsoft.Extensions.AI.Abstractions, Version=10.4.0.0'

Root Cause

The MEAI 10.4.0 release unified several HITL types:

• UserInputRequestContent → ToolApprovalRequestContent
• UserInputResponseContent → ToolApprovalResponseContent
• FunctionApprovalRequestContent → ToolApprovalRequestContent
• FunctionApprovalResponseContent → ToolApprovalResponseContent
• McpServerToolApprovalRequestContent → ToolApprovalRequestContent
• .Id → .RequestId
• .FunctionCall → .ToolCall

AgentFramework beta.11 was compiled against the rc3 API surface which references the old types.

Fix

Update Microsoft.Agents.AI* packages from 1.0.0-rc3 to 1.0.0 and adapt all code to the new unified types.