| Platform SDK: Network Management |
The SnmpGetLastError function can return a general error code after a WinSNMP function fails. The following table lists the WinSNMP common error codes.
| Error code | Meaning | Recommended action |
|---|---|---|
| SNMPAPI_NOT_INITIALIZED | The SnmpStartup function did not complete successfully either since program execution began, or since a call to the SnmpCleanup function completed successfully. | The application should call SnmpGetLastError before it calls any other WinSNMP API function when SnmpStartup fails. The SnmpGetLastError function returns extended error information about the failure of SnmpStartup. |
| SNMPAPI_ALLOC_ERROR | The application specified an invalid pointer, or an error occurred during memory allocation. The Microsoft WinSNMP implementation could not obtain sufficient resources to execute the request. | The application should provide valid memory pointers for all output parameters. It should free resources, reduce resource requirements, or facilitate a graceful shutdown. A graceful shutdown includes multiple calls to the SnmpClose function, one for each open WinSNMP session. It also includes a call to the SnmpCleanup function. |
| SNMPAPI_NOOP | The function did not complete successfully because all output parameters are NULL. | The application must specify at least one output parameter that is not NULL when calling a function that returns information to the application. |
| SNMPAPI_OTHER_ERROR | An unknown or undefined error occurred. | The application should usually respond with a graceful shutdown. A graceful shutdown includes multiple calls to the SnmpClose function, one for each open WinSNMP session. It also includes a call to the SnmpCleanup function. |
The WinSNMP errors that convey context-specific information are noted in each function's reference page.