AutoGen Is Dead: The Complete Microsoft Agent Framework 1.0 Migration Guide

The Migration Timeline

AutoGen entered maintenance mode in October 2025. No new features. Security patches only. Microsoft Agent Framework 1.0 reached GA on April 2, 2026, as the official replacement. Teams still on AutoGen face increasing security risk and missing production features.

This guide covers the complete migration from AutoGen to MAF 1.0, with side-by-side code comparisons and a production deployment checklist.

Breaking Changes Overview

Side-by-Side Code Comparison

Agent Definition

AutoGen:

from autogen import AssistantAgent

agent = AssistantAgent(
    name=\"assistant\",
    llm_config={
        \"config_list\": [{\"model\": \"gpt-5.6-sol\", \"api_key\": os.environ[\"OPENAI_API_KEY\"]}],
        \"temperature\": 0.7,
    },
    system_message=\"You are a helpful assistant.\",
)

MAF 1.0:

from microsoft_agent_framework import Agent
from microsoft_agent_framework.models import OpenAIModel

model = OpenAIModel(model=\"gpt-5.6-sol\", api_key=os.environ[\"OPENAI_API_KEY\"])

agent = Agent(
    name=\"assistant\",
    model=model,
    instructions=\"You are a helpful assistant.\",
)

Multi-Agent Group

AutoGen:

from autogen import GroupChat, GroupChatManager

group = GroupChat(
    agents=[agent1, agent2, agent3],
    messages=[],
    max_round=10,
)
manager = GroupChatManager(groupchat=group, llm_config=llm_config)

MAF 1.0:

from microsoft_agent_framework import AgentGroup

group = AgentGroup(
    name=\"review-team\",
    agents=[agent1, agent2, agent3],
    orchestration=\"round-robin\",  # or \"parallel\", \"sequential\"
)

Tool Registration

AutoGen:

from autogen import register_function

def my_tool(query: str) -> str:
    return f\"Result for {query}\"

register_function(my_tool, caller=agent1, executor=agent2, description=\"Search tool\")

MAF 1.0:

from microsoft_agent_framework import tool

@tool
def my_tool(query: str) -> str:
    \"\"\"Search tool\"\"\"
    return f\"Result for {query}\"

agent = Agent(
    name=\"assistant\",
    model=model,
    tools=[my_tool],
)

Migration Steps

Step 1: Update Imports

# Remove AutoGen
pip uninstall autogen

# Install MAF 1.0
pip install microsoft-agent-framework

Step 2: Replace Agent Classes

• AssistantAgent -> Agent
• Remove UserProxyAgent (use MAF's built-in human-in-the-loop)
• Update llm_config to model parameter

Step 3: Replace GroupChat

• GroupChat + GroupChatManager -> AgentGroup
• Configure orchestration mode (round-robin, parallel, sequential)

Step 4: Update Tool Registration

• register_function -> @tool decorator + tools parameter
• Tool descriptions move to docstrings

Step 5: Test and Deploy

• Run existing test suite against MAF 1.0 agents
• Verify tool calls work correctly
• Check human-in-the-loop flows

Production Deployment Checklist

• All agents migrated from AutoGen classes
• GroupChat replaced with AgentGroup
• Tools re-registered with @tool decorator
• Human-in-the-loop flows tested
• Azure AD / Entra authentication configured
• Monitoring and observability set up
• Load testing completed
• Rollback plan documented

Production Reality Check

Migration timeline: For a team with 10 agents and 5 tools, expect 2-3 engineering days for migration. Zero-downtime: Deploy MAF 1.0 alongside AutoGen, migrate agents one by one, then decommission AutoGen. Testing: MAF 1.0 includes migration assistants that analyze your AutoGen code and generate migration plans automatically.

By <a href="https://x.com/deeepakbagada" rel="nofollow noopener noreferrer">Deepak Bagada, CEO at SaaSNext & Principal AI Architect.

Last updated: August 30, 2026. Based on Microsoft Agent Framework 1.0 official documentation.