How to fix Error 2570 on Windows Server 2025 / Windows 11

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Why This Error Happens

Error 2570 indicates that SQL Server has detected a mismatch between the object/index ID stored in a page’s header and the object/index ID that the page actually belongs to, based on the system catalog. This is almost always caused by physical data corruption resulting from faulty storage hardware, a failing disk controller, or an improperly configured I/O subsystem that does not guarantee write-order fidelity. It can also occur after an unclean shutdown, a SAN/storage failover event, or when antivirus/backup software interferes with the MDF/NDF files while SQL Server is writing to them.

Step-by-Step Resolution Guide

Step 1: Isolate the Database and Stop Further Writes

  • Immediately set the database to SINGLE_USER or take it offline to prevent additional transactions from compounding the corruption.
  • Run: ALTER DATABASE [YourDB] SET SINGLE_USER WITH ROLLBACK IMMEDIATE;
  • Avoid running INSERT/UPDATE operations against the affected table until diagnostics are complete.

Step 2: Run DBCC CHECKDB to Scope the Damage

  • Execute DBCC CHECKDB ('YourDB') WITH NO_INFOMSGS, ALL_ERRORMSGS; to get the full list of affected pages and objects.
  • Note the exact %S_PGID (file:page) value and the object/index ID reported alongside Error 2570.
  • Cross-reference the page using DBCC PAGE (DBID, FileID, PageID, 3) WITH TABLERESULTS; to confirm which table/index is impacted.

Step 3: Restore from a Known Good Backup (Preferred Fix)

  • Locate your most recent full backup plus subsequent log backups taken before the corruption timestamp.
  • Restore the database to a new location first to verify integrity: RESTORE DATABASE [YourDB_Test] FROM DISK = 'D:\Backups\YourDB_Full.bak' WITH NORECOVERY;
  • Apply transaction log backups up to (but not including) the point of corruption, then run RESTORE DATABASE ... WITH RECOVERY.
  • Run DBCC CHECKDB again on the restored copy to confirm it is clean before promoting it to production.

Step 4: Use Repair Options Only as a Last Resort

  • If no valid backup exists, run DBCC CHECKDB ('YourDB', REPAIR_ALLOW_DATA_LOSS) in SINGLE_USER mode — note this may delete corrupted rows/pages permanently.
  • Before repairing, export any recoverable data from the affected table using SELECT ... INTO queries that bypass the damaged pages if possible.
  • Re-run DBCC CHECKDB afterward to confirm the error 2570 no longer appears.

Step 5: Check and Remediate the Underlying Storage

  • Review the Windows Server 2025 Event Viewer (System and Application logs) for Disk, NTFS, or storport errors around the time of corruption.
  • Validate disk health using Get-PhysicalDisk | Get-StorageReliabilityCounter in PowerShell, and run chkdsk D: /f /r on the affected volume during a maintenance window.
  • Confirm that SQL Server’s data/log files are excluded from real-time antivirus scanning and that write-caching policies on the storage controller are configured correctly (disable volatile write cache unless battery-backed).

Alternative or Verification Steps

  • After remediation, run DBCC CHECKDB ('YourDB') WITH NO_INFOMSGS, ALL_ERRORMSGS; one final time — a clean result with zero allocation/consistency errors confirms the fix.
  • If corruption recurs on the same LUN/volume after remediation, treat it as a hardware-level issue and engage your SAN/storage vendor or migrate the database files to a different physical disk/array.