ERROR_CLUSTER_BACKUP_IN_PROGRESS - 5949 (0x173D)
Back up is in progress. Please wait for backup completion before trying this operation again.
Updated: Feb 21, 2026
Technical Meaning
The ERROR_CLUSTER_BACKUP_IN_PROGRESS error code indicates that a cluster backup operation is currently in progress. This error typically occurs when an attempt is made to perform an operation on a clustered resource or volume during the backup process.
Error Details
This error code is returned by Windows APIs and functions related to cluster resources, such as ClusterQueryResourceGroup or ClusterGetVolumeInformation. The presence of this error suggests that the system is performing a backup operation, which may affect the availability or accessibility of certain resources until the backup completes.
Usage Context
This error code is commonly encountered in scenarios where cluster administrators or developers interact with clustered resources. It can be returned by various Windows APIs and functions when an attempt to modify or access a resource during a backup operation fails.
Developer Interpretation
When this error is returned, the developer should understand that the current operation cannot proceed because a backup is active. The application should handle this situation gracefully by informing the user of the ongoing backup and suggesting they retry the operation once the backup has completed.
Related Errors
ERROR_CLUSTER_NOT_STARTED(0x80240016)ERROR_CLUSTER_SHUTTING_DOWN(0x80240035)ERROR_CLUSTER_INVALID_NODE(0x80240037)
FAQ
Q: What does the ERROR_CLUSTER_BACKUP_IN_PROGRESS error mean?
A: This error indicates that a backup operation is currently in progress, and the system cannot perform the requested operation until the backup completes.
Q: How can I handle this error in my application?
A: Your application should inform the user of the ongoing backup and allow them to retry the operation once the backup has completed. Avoid forcefully terminating the backup process as it may lead to data inconsistencies or corruption.
Summary
The ERROR_CLUSTER_BACKUP_IN_PROGRESS error code is a generic indication that a cluster backup operation is active, preventing certain operations from being performed on clustered resources. Developers should handle this error by informing users and allowing them to retry their actions once the backup has completed.