1---
2name: azure-messaging
3description: "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 processor host issue, message lock lost, message lock expired, lock renewal, lock renewal batch, send timeout, receiver disconnected, SDK troubleshooting, azure messaging SDK, event hub consumer, service bus queue issue, topic subscription error, enable logging event hub, service bus logging, eventhub python, servicebus java, eventhub javascript, servicebus dotnet, event hub checkpoint, event hub not receiving messages, service bus dead letter, batch processing lock, session lock expired, idle timeout, connection inactive, link detach, slow reconnect, session error, duplicate events, offset reset, receive batch."
4license: MIT
5metadata:
6  author: Microsoft
7  version: "0.0.0-placeholder"
8---
9 
10# Azure Messaging SDK Troubleshooting
11 
12## Quick Reference
13 
14| Property | Value |
15|----------|-------|
16| **Services** | Azure Event Hubs, Azure Service Bus |
17| **MCP Tools** | `mcp_azure_mcp_eventhubs`, `mcp_azure_mcp_servicebus` |
18| **Best For** | Diagnosing SDK connection, auth, and message processing issues |
19 
20## When to Use This Skill
21 
22- SDK connection failures, auth errors, or AMQP link errors
23- Idle timeout, connection inactivity, or slow reconnection after disconnect
24- AMQP link detach or detach-forced errors
25- Message lock lost, message lock expired, lock renewal failures, or batch lock timeouts
26- Session lock lost, session lock expired, or session receiver errors
27- Event processor or message handler stops processing
28- Duplicate events or checkpoint offset resets
29- SDK configuration questions (retry, prefetch, batch size, receive batch behavior)
30 
31## MCP Tools
32 
33| Tool | Command | Use |
34|------|---------|-----|
35| `mcp_azure_mcp_eventhubs` | Namespace/hub ops | List namespaces, hubs, consumer groups |
36| `mcp_azure_mcp_servicebus` | Queue/topic ops | List namespaces, queues, topics, subscriptions |
37| `mcp_azure_mcp_monitor` | `logs_query` | Query diagnostic logs with KQL |
38| `mcp_azure_mcp_resourcehealth` | `get` | Check service health status |
39| `mcp_azure_mcp_documentation` | Doc search | Search Microsoft Learn for troubleshooting docs |
40 
41## Diagnosis Workflow
42 
431. **Identify the SDK and version** — Check the prompt for SDK and version clues; if not stated, proceed with diagnosis and ask later if needed
442. **Check resource health** — Use `mcp_azure_mcp_resourcehealth` to verify the namespace is healthy
453. **Review the error message** — Match against language-specific troubleshooting guide
464. **Look up documentation** — Use `mcp_azure_mcp_documentation` to search Microsoft Learn for the error or topic
475. **Check configuration** — Verify connection string, entity name, consumer group
486. **Recommend fix** — Apply remediation, citing documentation found
49 
50 
51## Troubleshooting Guides
52 
53Connectivity, SDK, and auth troubleshooting guides are located in the azure-diagnostics skill under `troubleshooting/messaging/`.
54 
55## References
56 
57- Use `mcp_azure_mcp_documentation` to search Microsoft Learn for latest guidance.