What does HRESULT 0x800401E0 (MK_E_CONNECTMANUALLY) mean?

MK_E_CONNECTMANUALLY

Moniker needs to be connected manually

The native value 0x800401E0 is MK_E_CONNECTMANUALLY, unsigned 2147746272 and signed -2147221024. The documented description is “Moniker needs to be connected manually”. Treat it as evidence that the moniker cannot complete automatic connection and requires caller-managed binding steps; the operation in progress is binding a moniker whose target needs explicit setup or connection.

Operational meaning

• Confirm that this result came from binding a moniker whose target needs explicit setup or connection, rather than from cleanup or a wrapper that ran afterward.

Cause model

• It can result when the moniker class has no automatic route to the target in this context.
• It can result when required left-side object or service connection was not supplied.
• It can result when policy or application design requires an explicit user or caller choice before connecting.

Troubleshooting workflow

1. Identify the exact object, method, and lifecycle phase involved in binding a moniker whose target needs explicit setup or connection.
2. Record moniker class, composite components, pmkToLeft, requested IID, and bind context parameters.
3. Inspect the moniker implementation’s documented manual-connection path.
4. Avoid translating this into a generic network retry.

What to log

Correction strategy

Correction. perform the class-specific explicit connection and then bind using the resulting context or object. Retry condition. Retry only after the manual prerequisite is satisfied; repeated BindToObject calls preserve the same missing connection. Before repeating the operation, release partial monikers and bound interfaces, unregister only owned Running Object Table entries, and abandon a bind context whose deadline or parameters no longer match the retry.

Practical scenario

A custom moniker identifies a session resource but requires the application to select and authenticate a session first; adding that session object to the bind context enables binding.

Difference from related HRESULTs

MK_E_MUSTBOTHERUSER specifically requires user input; it may be satisfied programmatically by caller-managed setup.

Developer and administrator guidance

References

• Microsoft: generic COM error codes
• Microsoft: HRESULT values
• Microsoft: IMoniker
• Microsoft: IBindCtx
• Microsoft: MkParseDisplayName