ERROR_LOST_WRITEBEHIND_DATA_NETWORK_DISCONNECTED (788)

Technical Background

This error code, ERROR_LOST_WRITEBEHIND_DATA_NETWORK_DISCONNECTED with the numeric value 788 or hexadecimal 0x314, is associated with issues related to delayed write operations in the Windows file system. Delayed writes are a mechanism used by the operating system to improve performance by deferring the writing of data to disk until a more convenient time, such as when the buffer cache fills up.

Error Details

The error message {Delayed Write Failed} Windows was unable to save all the data for the file %hs; the data has been lost. This error may be caused by network connectivity issues. indicates that during a delayed write operation, the system attempted to save data but encountered a failure due to a network disconnection.

Common Causes

Network Disconnection: The most likely cause of this error is a temporary network disconnection while the delayed write was in progress. This can occur if the network connection drops before the data is fully written to disk.
Buffer Cache Full: If the buffer cache is full and the system cannot find an available slot to store the delayed write, it may result in this error.

Real-World Context

This error typically occurs when a file operation involves writing data that has been cached for later writing. Such operations are common in scenarios where large files or multiple writes are performed over a network connection. The system attempts to optimize performance by deferring these writes until the cache is full, but if the network disconnects during this process, some of the written data may be lost.

Is This Error Critical?

The criticality of this error depends on the context in which it occurs. If important data was being saved and a network disconnection occurred, there could be significant consequences. However, for less critical operations, the impact might be minimal.

How to Diagnose

To diagnose this issue, consider the following steps:

Review Operation Context: Check if any network operations were in progress when the error occurred.
Validate Parameters: Ensure that all parameters used in file operations are correct and valid.
Confirm Object Types: Verify that the object types involved (files or directories) are correctly identified by the system.
Verify Input Data: Confirm that the data being written is not corrupted or invalid.

How to Resolve

To mitigate this issue, follow these practical steps:

Correct Parameter Usage: Ensure all parameters used in file operations are correct and valid.
Adjust Operation Context: If possible, perform file operations during periods of stable network connectivity.
Restore Data: If data loss is detected, attempt to restore from backups or other reliable sources.
Retry Operation with Valid Inputs: Retry the operation using valid inputs if the issue persists.

Developer Notes

Developers should be aware that delayed write operations can fail due to network disconnections. Implementing robust error handling and retry mechanisms in applications can help mitigate this issue. Additionally, ensuring stable network connections during critical file operations is recommended.

Related Errors

FAQ

Q: What does the error code 788 mean?

A: The error code 788, or ERROR_LOST_WRITEBEHIND_DATA_NETWORK_DISCONNECTED, indicates that a delayed write operation failed due to a network disconnection.

Q: How can I prevent this error from occurring?

A: To minimize the risk of this error, ensure stable network connections during file operations and implement retry mechanisms in your application code.

Summary

The ERROR_LOST_WRITEBEHIND_DATA_NETWORK_DISCONNECTED (788) is a specific error related to delayed write operations failing due to network disconnections. Understanding its context and implementing appropriate measures can help mitigate the impact of this issue.