ERROR_POPUP_ALREADY_ACTIVE - 1446 (0x5A6)
Popup menu already active.
Updated: Feb 21, 2026
Technical Meaning
The ERROR_POPUP_ALREADY_ACTIVE error code indicates that a popup menu is already active and cannot be opened again. This error typically occurs in user interface operations where multiple popup menus are attempted to be displayed simultaneously.
Error Details
This error code is returned when an application or system attempt to open a popup menu while another popup menu is currently active. The operation fails, and the error is reported with this specific code.
Usage Context
The ERROR_POPUP_ALREADY_ACTIVE error can occur in various scenarios where user interface elements are managed by Windows. For example, it might be encountered when attempting to show multiple context menus or dialog boxes simultaneously.
Developer Interpretation
When encountering the ERROR_POPUP_ALREADY_ACTIVE error, developers should understand that the operation failed because a popup menu is already active and cannot be opened again. This can affect user experience if multiple popups are intended to be shown in rapid succession.
Related Errors
ERROR_NO_SYSTEM_RESOURCES(896)ERROR_INVALID_WINDOW_HANDLE(1403)
FAQ
Q: What does the ERROR_POPUP_ALREADY_ACTIVE error mean?
A: It indicates that a popup menu is already active and cannot be opened again.
Q: How can I handle this error in my application?
A: Ensure that only one popup menu is open at a time. Close any existing popups before attempting to show another one.
Summary
The ERROR_POPUP_ALREADY_ACTIVE error code signifies that an attempt was made to activate a popup menu when one was already active. Developers should manage their user interface operations carefully to avoid this situation and ensure smooth application behavior.