ERROR_LOCKED - 212 (0xD4)
The segment is locked and cannot be reallocated.
Updated: Feb 21, 2026
Technical Meaning
The ERROR_LOCKED error code indicates that a segment of memory or file system resource is currently locked and cannot be reallocated. This means that the operation attempted to modify or release this resource, but it was found to be in use by another process or operation.
Error Details
This error typically occurs when an attempt is made to free up a segment of memory or a file system object that is currently locked. The locking mechanism ensures that resources are not freed while they are being used, which could lead to data corruption or other issues if the resource were to be released prematurely.
Usage Context
The ERROR_LOCKED error can occur in various contexts within the Windows operating system, particularly when dealing with memory management and file system operations. It is commonly encountered during attempts to delete files, free up memory segments, or perform other operations that require modifying locked resources.
Developer Interpretation
When encountering this error, developers should understand that the operation failed because a resource was in use by another process or operation. This could be due to various reasons such as an ongoing write operation, an active file handle, or a memory segment being used by a currently running application.
Related Errors
These errors often indicate similar issues where resources are in use or cannot be accessed due to various constraints.
FAQ
Q: What does the ERROR_LOCKED error mean?
A: It indicates that a resource is currently locked and cannot be reallocated, preventing the operation from completing successfully.
Q: How can I resolve this issue?
A: Ensure that no other processes are using the resource before attempting to modify or release it. Close any applications that may have open handles to the resource and retry the operation.
Summary
The ERROR_LOCKED error code is a specific technical indicator that a resource is locked and cannot be reallocated, often encountered during file system operations or memory management tasks in Windows. Understanding this error helps developers diagnose issues related to resource usage and ensure proper handling of such constraints.