BA2561: Unable to create Catalogue using MFT parser¶
| Error code | Product | Applies to |
|---|---|---|
| BA2561 | BackupAssist | For BackupAssist 15.0.0 or later. |
Description¶
Unable to create catalogue by using MFT parser. The legacy (slow) traverser was used instead.
Resolution¶
BackupAssist could not read the volume's Master File Table (MFT) to build the catalogue quickly, so it fell back to the slower legacy traverser. The backup still completed - this is about restoring the faster catalogue path. It is usually caused by minor NTFS inconsistencies on the volume.
From an elevated command prompt, run a check-disk on the affected volume - for the volume with drive letter X, run "chkdsk X: /f". Note that "chkdsk /f" needs exclusive access and dismounts the volume while it runs; on a volume that is in use it runs at the next restart, so schedule it outside backup and production hours. Once the volume is clean, MFT parsing is used again on the next backup.
If you would rather keep using the legacy traverser, Support can direct you to a registry value (DisableMFTParsing) that skips the MFT attempt.
| Last updated | Created | Further assistance |
|---|---|---|
| 15th Sep 2026 | 6th Nov 2025 | BackupAssist Support page |