ERROR_DISK_QUOTA_EXCEEDED - 1295 (0x50F)
The requested file operation failed because the storage quota was exceeded. To free up disk space, move files to a different location or delete unnecessary files. For more information, contact your system administrator.
Updated: Feb 21, 2026
Technical Background
The ERROR_DISK_QUOTA_EXCEEDED error is a specific resource limit error that occurs when attempting to perform a file operation on a volume where the storage quota has been exceeded. This error indicates that the system cannot complete the requested action due to insufficient available disk space within the allocated quota.
Error Details
- Error Name: ERROR_DISK_QUOTA_EXCEEDED
- Numeric Code: 1295 (0x50F)
- Short Description: The requested file operation failed because the storage quota was exceeded. To free up disk space, move files to a different location or delete unnecessary files.
- Context Dependency: This error is context-dependent and typically occurs in scenarios where a user or application attempts to write data to a volume that has a configured storage quota limit.
Common Causes
The common causes of this error include:
- Exceeding the allocated storage quota for the file system object being accessed.
- Attempting to create, modify, or delete files in a directory where the remaining space is insufficient to complete the operation.
- Insufficient free disk space on the volume due to other factors such as fragmented files or large temporary files.
Real-World Context
This error can occur in various scenarios, including:
- Users attempting to save documents or create new files in a directory where their storage quota has been reached.
- Applications that generate large amounts of data and fail to manage disk space effectively.
- Networked file systems with shared quotas among multiple users.
Is This Error Critical?
The criticality of this error depends on the specific context. In most cases, it is not a critical system failure but rather an indication that the user or application needs to take action to free up disk space before proceeding with further operations.
How to Diagnose
To diagnose and resolve ERROR_DISK_QUOTA_EXCEEDED, follow these steps:
- Review Operation Context: Determine which file operation was attempted when the error occurred.
- Validate Parameters: Ensure that all parameters passed to the file system operations are correct and valid.
- Confirm Object Types: Verify that the object types (files, directories) being accessed match the expected type for the operation.
- Verify Input Data: Check if there is sufficient free disk space available on the volume where the operation was attempted.
- Check Limits or Constraints: Confirm that the storage quota limits have not been exceeded and are correctly configured.
How to Resolve
To resolve ERROR_DISK_QUOTA_EXCEEDED, consider these practical steps:
- Move files to a different location with sufficient free space.
- Delete unnecessary files to free up disk space.
- Adjust the storage quota settings if possible, either by increasing the limit or by redistributing quotas among users.
- Optimize file usage and management practices to prevent future occurrences of this error.
Developer Notes
Developers should ensure that their applications handle ERROR_DISK_QUOTA_EXCEEDED gracefully. This includes providing user-friendly messages and suggesting actions to free up disk space. Additionally, implementing mechanisms to monitor and manage storage quotas can help prevent such errors from occurring.
Related Errors
- ERROR_INSUFFICIENT_BUFFER (122): Insufficient buffer size for the operation.
- ERROR_DISK_FULL (0x7A): The volume is full; no space left on device.
FAQ
Q: What does ERROR_DISK_QUOTA_EXCEEDED mean?
A: This error indicates that a file operation failed because the storage quota was exceeded. It suggests moving or deleting files to free up disk space.
Q: How can I prevent this error from occurring?
A: Regularly monitor and manage disk usage, ensure sufficient free space is available, and configure appropriate storage quotas for users or applications.
Summary
ERROR_DISK_QUOTA_EXCEEDED (1295) is a specific resource limit error that occurs when attempting to perform file operations on volumes with configured storage quotas. Understanding its context and causes can help in diagnosing and resolving issues efficiently, ensuring smooth operation of both user activities and applications.