ERROR_INSUFFICIENT_RESOURCE_FOR_SPECIFIED_SHARED_SECTION_SIZE - 781 (0x30D)
The Desktop heap encountered an error while allocating session memory. There is more information in the system event log.
Updated: Feb 21, 2026
Technical Meaning
This error code indicates that the desktop heap encountered an issue while attempting to allocate session memory for a specified shared section size. The desktop heap is a critical component of Windows, responsible for managing resources such as window handles and other system objects.
Error Details
The error ERROR_INSUFFICIENT_RESOURCE_FOR_SPECIFIED_SHARED_SECTION_SIZE (781 or 0x30D) suggests that the requested shared section size could not be allocated due to insufficient available resources. This can occur when the system is under heavy load, or when resource limits have been reached.
Usage Context
This error typically occurs in scenarios where a process attempts to create a shared memory section with a specific size, which exceeds the current capacity of the desktop heap. It may also be encountered during operations that require significant memory allocation, such as creating large windows or handling extensive user interface elements.
Developer Interpretation
Developers should interpret this error as an indication that the requested resource cannot be allocated due to limitations in available system resources. This could be a result of insufficient heap space, high memory usage by other processes, or reaching predefined limits set by the operating system.
Related Errors
These errors may occur in similar contexts, indicating issues with resource allocation or system limitations.
FAQ
Q: What does this error mean?
A: This error indicates that the desktop heap could not allocate sufficient resources for a specified shared section size due to insufficient available memory.
Q: How can I resolve this issue?
A: Ensure that your application is not requesting excessive resources and that it is properly managing its memory usage. Monitor system resource utilization and consider optimizing or adjusting the operation context if necessary.
Summary
The ERROR_INSUFFICIENT_RESOURCE_FOR_SPECIFIED_SHARED_SECTION_SIZE error (781) signifies an issue with allocating session memory for a specified shared section size due to insufficient available resources in the desktop heap. Developers should be aware of this limitation and ensure that their applications are designed to handle resource constraints effectively.