ERROR_ROLLBACK_TIMER_EXPIRED - 6829 (0x1AAD)
A rollback could not be scheduled because a previously scheduled rollback has already executed or been queued for execution.
Updated: Feb 21, 2026
Technical Meaning
The ERROR_ROLLBACK_TIMER_EXPIRED error code indicates that a rollback operation could not be scheduled because another rollback was already in progress or queued for execution. This error is typically encountered when attempting to initiate a rollback action, but the system detects that a previous rollback attempt has either completed or is pending.
Error Details
This error suggests that the system's internal rollback mechanism is designed to prevent overlapping operations. When a rollback is initiated, it must ensure that no other rollbacks are active to maintain consistency and avoid potential conflicts or data corruption.
Usage Context
The ERROR_ROLLBACK_TIMER_EXPIRED error can occur in various scenarios where rollback operations are necessary, such as during system updates, application installations, or configuration changes. It is particularly relevant in environments where transactional operations are managed by the operating system to ensure data integrity and consistency.
Developer Interpretation
Developers should interpret this error code as an indication that a previous rollback operation has already been initiated or completed. This implies that any attempt to perform another rollback will be blocked, and the current operation must either proceed without rollback support or be retried after the pending rollback is resolved.
Related Errors
ERROR_ROLLBACK_FAILED(0x800704B2): Indicates a failure in executing a rollback operation due to various reasons such as insufficient permissions or corrupted state.ERROR_TRANSACTION_INTEGRITY_VIOLATION(0x8004D01F): Suggests that the transaction integrity has been compromised, which could be related to failed rollbacks.
FAQ
Q: What does the ERROR_ROLLBACK_TIMER_EXPIRED error mean?
A: It indicates that a rollback operation cannot proceed because another rollback is already in progress or queued for execution.
Q: How can I handle this error in my application?
A: You should check if any previous rollbacks are pending and either complete them or retry the current operation after ensuring no other rollbacks are active.
Summary
The ERROR_ROLLBACK_TIMER_EXPIRED error code is a specific technical indicator that another rollback operation is already active, preventing further rollback actions. Developers must ensure their operations respect this state to maintain system integrity and avoid conflicts.