Cry about...
MS-Windows Troubleshooting

---

DllRegisterServer in COM failed.
Return code was: 0xNNNNNNNN

---

Symptom:

When attempting to register a COM object (e.g. Active-X component or OCX) with ‘Regsvr32’, i.e.:

regsvr32 COM

it fails with a message box displaying:

DllRegisterServer in COM failed.
Return code was: 0xNNNNNNNN

Where ‘COM’ is the name of the COM object file and ‘NNNNNNNN’ is an eight digit hex number.

Cause:

The cause depends on the specific error.

For a list of possible errors from regsvr32 see the Microsoft Knowledge Base article Q249873.

For a detailed list of error numbers see http://msdn.microsoft.com/library/en-us/netdir/adsi/win32_error_codes.asp or Q155011 (Error codes in NT part 1 of 2).

Errors previously observed:

Error Number	Name	Try
0x000000b6	ERROR_INVALID_ORDINAL	Try updating system libraries such as MFC42.DLL.
0x00000485	ERROR_DLL_NOT_FOUND	See Microsoft Knowledge Base article Q160018.

See also:

• DllRegisterServer in COM failed. Return code was: 0x0000007e
• DllRegisterServer in COM failed. Return code was: 0x8002801c
• DllRegisterServer in COM failed. Return code was: 0x80070005

---

These notes have been tested with Windows NT4 and are believed to be applicable to both Windows 2000 and XP.