# Azure Messaging

> Troubleshoot and resolve issues with Azure Messaging SDKs for Event Hubs and Service Bus. Covers connection failures, authentication errors, message processing issues, and SDK configuration problems. WHEN: event hub SDK error, service bus SDK issue, messaging connection failure, AMQP error, event...

- Skill: `jantoniofc/azure-messaging` (Agent Skill, multi-file: 11 files)
- Install (CLI): `npx skillmds@latest add jantoniofc/azure-messaging`
- Raw SKILL.md: https://api.skillmd.com/api/skills/jantoniofc/azure-messaging/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: DevOps & Infra
- License: MIT
- Author: JantonioFC (https://skillmd.com/u/jantoniofc)
- Updated: 2026-09-08
- Page: https://skillmd.com/skills/jantoniofc/azure-messaging

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# Azure Messaging SDK Troubleshooting

## Quick Reference

| Property | Value |
|----------|-------|
| **Services** | Azure Event Hubs, Azure Service Bus |
| **MCP Tools** | `mcp_azure_mcp_eventhubs`, `mcp_azure_mcp_servicebus` |
| **Best For** | Diagnosing SDK connection, auth, and message processing issues |

## When to Use This Skill

- SDK connection failures, auth errors, or AMQP link errors
- Message lock lost, session lock, or send/receive timeouts
- Event processor or message handler stops processing
- SDK configuration questions (retry, prefetch, batch size)

## MCP Tools

| Tool | Command | Use |
|------|---------|-----|
| `mcp_azure_mcp_eventhubs` | Namespace/hub ops | List namespaces, hubs, consumer groups |
| `mcp_azure_mcp_servicebus` | Queue/topic ops | List namespaces, queues, topics, subscriptions |
| `mcp_azure_mcp_monitor` | `logs_query` | Query diagnostic logs with KQL |
| `mcp_azure_mcp_resourcehealth` | `get` | Check service health status |
| `mcp_azure_mcp_documentation` | Doc search | Search Microsoft Learn for troubleshooting docs |

## Diagnosis Workflow

1. **Identify the SDK and version** — Ask which language SDK and version the user is on
2. **Check resource health** — Use `mcp_azure_mcp_resourcehealth` to verify the namespace is healthy
3. **Review the error message** — Match against language-specific troubleshooting guide
4. **Look up documentation** — Use `mcp_azure_mcp_documentation` to search Microsoft Learn for the error or topic
5. **Check configuration** — Verify connection string, entity name, consumer group
6. **Recommend fix** — Apply remediation, citing documentation found


## Connectivity Troubleshooting

See [Service Troubleshooting Guide](references/service-troubleshooting.md) for ports, WebSocket fallback, IP firewall, private endpoints, and service tags.

## SDK Troubleshooting Guides

- **Event Hubs**: [Python](references/sdk/azure-eventhubs-py.md) | [Java](references/sdk/azure-eventhubs-java.md) | [JS](references/sdk/azure-eventhubs-js.md) | [.NET](references/sdk/azure-eventhubs-dotnet.md)
- **Service Bus**: [Python](references/sdk/azure-servicebus-py.md) | [Java](references/sdk/azure-servicebus-java.md) | [JS](references/sdk/azure-servicebus-js.md) | [.NET](references/sdk/azure-servicebus-dotnet.md)

## References

Use `mcp_azure_mcp_documentation` to search Microsoft Learn for latest guidance. See [Service Troubleshooting Guide](references/service-troubleshooting.md) for network and service-level docs.