Login with User-Assigned Managed Identity broken

[NickKeller]

Running the MCP server in an AKS cluster, and receiving this error at startup

aks-mcp-server-deployment-5c474d4bbc-58vc7 mcp-server 2025/09/12 17:10:27 OAuth Config: Using client ID from environment variable AZURE_CLIENT_ID
aks-mcp-server-deployment-5c474d4bbc-58vc7 mcp-server 2025/09/12 17:10:27 OAuth Config: No CORS origins configured - cross-origin requests will be blocked for security
aks-mcp-server-deployment-5c474d4bbc-58vc7 mcp-server 2025/09/12 17:10:27 Initializing AKS MCP service...
aks-mcp-server-deployment-5c474d4bbc-58vc7 mcp-server 2025/09/12 17:10:27 Azure client initialized successfully
aks-mcp-server-deployment-5c474d4bbc-58vc7 mcp-server 2025/09/12 17:10:27 Using User-assigned Managed Identity authentication.
aks-mcp-server-deployment-5c474d4bbc-58vc7 mcp-server Initialization error: azure cli authentication failed: user-assigned managed identity login failed: ERROR: Passing the managed identity ID with --username is no longer supported. Use --client-id, --object-id or --resource-id instead.

[feiskyer]

Thanks for reporting the issue, let me check how to get it fixed