ERROR_INVALID_DWP_HANDLE - 1405 (0x57D)
Invalid handle to a multiple-window position structure.
Updated: Feb 21, 2026
Technical Meaning
The ERROR_INVALID_DWP_HANDLE error code indicates that a handle provided to the system is invalid for accessing a multiple-window position structure. This typically occurs when an application attempts to manipulate window positions or sizes using a handle that does not correspond to a valid multiple-window position object.
Error Details
A multiple-window position structure in Windows refers to a specific type of data structure used by certain APIs to manage the layout and positioning of windows within a multiple-document interface (MDI) application. An invalid handle suggests that either the handle is incorrect, has been closed prematurely, or does not refer to an active MDI window.
Usage Context
This error can arise in various scenarios where applications interact with MDI windows. Common contexts include resizing, moving, or otherwise manipulating the layout of multiple documents within a single application interface.
Developer Interpretation
When encountering ERROR_INVALID_DWP_HANDLE, developers should verify that all handles used are valid and still active. This includes ensuring that the handle was obtained through a legitimate API call and has not been closed or invalidated by other operations in the application or system.
Related Errors
- [ERROR_BAD excerption for related error, as no direct related errors exist]
FAQ
Q: What does ERROR_INVALID_DWP_HANDLE mean?
A: It indicates an invalid handle to a multiple-window position structure. This typically occurs when attempting to manipulate MDI windows with an incorrect or closed handle.
Q: How can I prevent this error?
A: Ensure that all handles used for window operations are valid and still active by checking their validity before performing any operations.
Summary
ERROR_INVALID_DWP_HANDLE is a specific error code indicating invalid handling of multiple-window position structures. Developers should focus on validating handle usage to avoid this error in applications involving MDI windows.