---
title: "_com_error::GUID | Microsoft Docs"
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---
# _com_error::GUID
**Microsoft Specific**  
  
 Calls **IErrorInfo::GetGUID** function.  
  
## Syntax  
  
```  
  
GUID GUID( ) const throw( );  
  
```  
  
## Return Value  
 Returns the result of **IErrorInfo::GetGUID** for the **IErrorInfo** object recorded within the `_com_error` object. If no **IErrorInfo** object is recorded, it returns `GUID_NULL`.  
  
## Remarks  
 Any failure while calling the **IErrorInfo::GetGUID** method is ignored.  
  
 **END Microsoft Specific**  
  
## See Also  
 [_com_error Class](../cpp/com-error-class.md)