ERROR_FULLSCREEN_MODE - 1007 (0x3EF)
The requested operation cannot be performed in full-screen mode.
Updated: Feb 21, 2026
Technical Meaning
The ERROR_FULLSCREEN_MODE error code, represented by the numeric value 1007 or the hexadecimal value 0x3EF, indicates that a requested operation cannot be performed while in full-screen mode. This error is specific to certain operations within the Windows operating system and is indicative of a context-dependent limitation.
Error Details
This error typically arises when an application attempts to perform an operation that is not supported or allowed during full-screen mode. Full-screen mode, often associated with video playback or gaming applications, restricts certain operations to maintain performance and user experience.
Usage Context
The ERROR_FULLSCREEN_MODE can be encountered in various scenarios where the operating system enforces restrictions on specific operations while in full-screen mode. Common contexts include:
- Video playback applications attempting to perform non-video-related tasks.
- Gaming applications needing to interact with the desktop environment.
- Applications requiring access to resources that are not available or restricted during full-screen mode.
Developer Interpretation
Developers should interpret this error code as a signal that the current operation is not supported in the current context. This can be due to the application attempting an operation that is incompatible with full-screen mode, such as interacting with the desktop environment or performing non-video-related tasks while in full-screen playback.
Related Errors
- ERROR_INVALID_FUNCTION (1): Indicates a function call is invalid for the current state of the system.
- ERROR_NOT_SUPPORTED (50): The requested operation is not supported by the system.
- ERROR_ACCESS_DENIED (5): Access to the resource or operation is denied, which can sometimes be related to full-screen mode restrictions.
FAQ
Q: What does the ERROR_FULLSCREEN_MODE error mean?
A: It indicates that a requested operation cannot be performed while in full-screen mode. This is due to limitations imposed by the operating system on certain operations during full-screen sessions.
Q: How can I resolve this issue?
A: Ensure that the application or operation you are attempting does not conflict with the current full-screen state. If necessary, exit full-screen mode and retry the operation.
Summary
The ERROR_FULLSCREEN_MODE error code is a specific indication of an operation being restricted during full-screen mode in Windows. Developers should handle this error by ensuring that their applications respect the limitations imposed by full-screen modes to maintain compatibility with the operating system's behavior.