| VSS_E_BAD_STATE | 0x80042301 | A function call was made when the object was in an incorrect state. This indicates that Microsoft’s VSS framework and/or perhaps some of the VSS writers are in a bad state. |
| VSS_E_UNEXPECTED | 0x80042302 | A volume shadow copy service (VSS) component encountered an unexpected error. |
| VSS_E_PROVIDER_NOT_REGISTERED | 0x80042304 | The volume shadow copy provider is not registered in the system. |
| VSS_E_PROVIDER_VETO | 0x80042306 | The shadow copy provider had an error. The provider was unable to perform the request at this time. This can be a transient problem. It is recommended to wait ten minutes and try again, up to three times. |
| VSS_E_PROVIDER_IN_USE | 0x80042307 | The shadow copy provider is currently in use and cannot be unregistered. |
| VSS_E_OBJECT_NOT_FOUND | 0x80042308 | The specified object was not found. This error means that Microsoft VSS failed to take a snapshot of your file systems and that the backup job will be unable to backup any files that are opened exclusively by other applications. The most common cause of this error is that VSS has been disabled on one or more of the volumes that are part of the backup. |
| VSS_S_ASYNC_PENDING | 0x00042309 | The asynchronous operation is pending. |
| VSS_S_ASYNC_FINISHED | 0x0004230A | The asynchronous operation has completed. |
| VSS_S_ASYNC_CANCELLED | 0x0004230B | The asynchronous operation has been cancelled. |
| VSS_E_VOLUME_NOT_SUPPORTED | 0x8004230C | Shadow copying the specified volume is not supported. |
| VSS_E_VOLUME_NOT_SUPPORTED_BY_PROVIDER | 0x8004230E | The given shadow copy provider does not support shadow copying the specified volume. |
| VSS_E_OBJECT_ALREADY_EXISTS | 0x8004230D | The object already exists. |
| VSS_E_UNEXPECTED_PROVIDER_ERROR | 0x8004230F | The shadow copy provider had an unexpected error while trying to process the specified operation. |
| VSS_E_CORRUPT_XML_DOCUMENT | 0x80042310 | The given XML document is invalid. It is either incorrectly-formed XML or it does not match the schema. |
| VSS_E_INVALID_XML_DOCUMENT | 0x80042311 | The given XML document is invalid. It is either incorrectly-formed XML or it does not match the schema. |
| VSS_E_MAXIMUM_NUMBER_OF_VOLUMES_REACHED | 0x80042312 | The maximum number of volumes for this operation has been reached. |
| VSS_E_FLUSH_WRITES_TIMEOUT | 0x80042313 | The shadow copy provider timed out while flushing data to the volume being shadow copied. This is probably due to excessive activity on the volume. Try again later when the volume is not being used so heavily. |
| VSS_E_HOLD_WRITES_TIMEOUT | 0x80042314 | The shadow copy provider timed out while holding writes to the volume being shadow copied. This is probably due to excessive activity on the volume by an application or a system service. Try again later when activity on the volume is reduced. |
| VSS_E_UNEXPECTED_WRITER_ERROR | 0x80042315 | VSS encountered problems while sending events to writers. |
| VSS_E_SNAPSHOT_SET_IN_PROGRESS | 0x80042316 | Another shadow copy creation is already in progress. Wait a few moments and try again. |
| VSS_E_MAXIMUM_NUMBER_OF_SNAPSHOTS_REACHED | 0x80042317 | The specified volume has already reached its maximum number of shadow copies. The volume has been added to the maximum number of shadow copy sets. The specified volume was not added to the shadow copy set. Other possible reasons |
| VSS_E_WRITER_INFRASTRUCTURE | 0x80042318 | An error was detected in the VSS. The problem occurred while trying to contact VSS writers. |
| VSS_E_WRITER_NOT_RESPONDING | 0x80042319 | A writer did not respond to a GatherWriterStatus call. The writer might have terminated, or it might be stuck. |
| VSS_E_WRITER_ALREADY_SUBSCRIBED | 0x8004231A | The writer has already successfully called the Subscribe function. It cannot call Subscribe multiple times. |
| VSS_E_UNSUPPORTED_CONTEXT | 0x8004231B | The shadow copy provider does not support the specified shadow copy type. |
| VSS_E_VOLUME_IN_USE | 0x8004231D | The specified shadow copy storage association is in use and so can’t be deleted. |
| VSS_E_MAXIMUM_DIFFAREA_ASSOCIATIONS_REACHED | 0x8004231E | Maximum number of shadow copy storage associations already reached. |
| VSS_E_INSUFFICIENT_STORAGE | 0x8004231F | Insufficient storage available to create either the shadow copy storage file or other shadow copy data. |
| VSS_E_REBOOT_REQUIRED | 0x80042327 | A reboot is required after completing this operation. |
| VSS_E_VOLUME_NOT_LOCAL | 0x8004232D | The volume being backed up is not mounted on the local host. |
| VSS_E_CLUSTER_TIMEOUT | 0x8004232E | A timeout occurred while preparing a cluster shared volume for backup. |
| VSS_E_WRITERERROR_INCONSISTENTSNAPSHOT | 0x800423F0 | The shadow copy set only contains only a subset of the volumes needed to correctly backup the selected components of the writer. |
| VSS_E_WRITERERROR_OUTOFRESOURCES | 0x800423F1 | A resource allocation failed while processing this operation. |
| VSS_E_WRITERERROR_TIMEOUT | 0x800423F2 | The writer’s timeout expired between the Freeze and Thaw events. |
| VSS_E_WRITERERROR_RETRYABLE | 0x800423F3 | The writer experienced a transient error. If the backup process is retried, the error might not reoccur. |
| VSS_E_WRITERERROR_NONRETRYABLE | 0x800423F4 | The writer experienced a non-transient error. If the backup process is retried, the error is likely to reoccur. |
| VSS_E_WRITERERROR_RECOVERY_FAILED | 0x800423F5 | The writer experienced an error while trying to recover the shadow copy volume. |
| VSS_E_LEGACY_PROVIDER | 0x800423F7 | This version of the hardware provider does not support this operation. |
| VSS_E_MISSING_DISK | 0x800423F8 | An expected disk did not arrive in the system. |
| VSS_E_MISSING_HIDDEN_VOLUME | 0x800423F9 | An expected hidden volume did not arrive in the system. Check the Application event log for more information. |
| VSS_E_MISSING_VOLUME | 0x800423FA | An expected volume did not arrive in the system. Check the Application event log for more information. |
| VSS_E_DYNAMIC_DISK_ERROR | 0x800423FC | An error occurred in processing the dynamic disks involved in the operation. |
| VSS_E_CLUSTER_ERROR | 0x80042400 | The clustered disks could not be enumerated or could not be put into cluster maintenance mode. Check the System event log for cluster related events and the Application event log for VSS related events. |
| VSS_E_UNSELECTED_VOLUME | 0x8004232A | The requested operation would overwrite a volume that is not explicitly selected. For more information, check the Application event log. |
| VSS_E_SNAPSHOT_NOT_IN_SET | 0x8004232B | The shadow copy ID was not found in the backup components document for the shadow copy set. |
| VSS_E_NESTED_VOLUME_LIMIT | 0x8004232C | The specified volume is nested too deeply to participate in the VSS operation. |
| VSS_E_NOT_SUPPORTED | 0x8004232F | The requested operation is not supported. |
| VSS_E_WRITERERROR_PARTIAL_FAILURE | 0x80042336 | The writer experienced a partial failure. Check the component level error state for more information. |
| VSS_E_WRITER_STATUS_NOT_AVAILABLE | 0x80042409 | Writer status is not available for one or more writers. A writer might have reached the limit to the number of available backup-restore session states. |
| VSS_E_KEY_DELETED | 0x800703FA | Illegal operation attempted on a registry key that has been marked for deletion. |
