HRESULT 0x8000401A (CO_E_RUNAS_LOGON

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: COM could not log on using the account configured in the class AppID RunAs value.

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CO_E_RUNAS_CREATEPROCESS_FAILURE	CO_E_LAUNCH_PERMSSION_DENIED

CO_E_RUNAS_LOGON_FAILURE

CO_E_RUNAS_LOGON_FAILURE means that the server identity was configured but COM could not establish the logon session needed to start the server. Unlike CO_E_RUNAS_SYNTAX, the account specification has already passed the basic syntax check.

What COM requires

For a non-service COM server configured with RunAs, COM obtains the user name from the AppID key and uses stored credentials to create the server’s logon session. Microsoft also notes that a user account used by a DCOM server must have the Log on as a batch job right. Service-hosted COM servers use service-account configuration instead of AppID RunAs.

Diagnostic sequence

Resolve the CLSID to its AppID, then verify the intended account with DCOM configuration rather than copying credentials into application settings.
Check the account’s logon policy and current validity before changing COM registration.
Keep service activation and RunAs activation separate: a class configured with LocalService should be diagnosed through the Windows service configuration and service-start result.

References

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