How to fix Error 3194 on Windows Server 2025 / Windows 11

by

Troubleshooting Guide: Error 3194 – “Page %S_PGID is beyond the end of the file”

Why This Error Happens

This error occurs during a SQL Server restore operation when the backup file references a page number that exceeds the current physical size of the destination database file. This mismatch typically happens because the backup was taken from a database with a larger file size than the target file, or the backup file itself is truncated, corrupted, or incomplete due to an interrupted transfer. It can also surface when restoring a differential or transaction log backup against a full backup baseline that does not match the expected file structure (LSN chain mismatch combined with file growth events).

Step-by-Step Resolution Guide

Step 1: Verify Backup File Integrity

  • Run RESTORE VERIFYONLY FROM DISK = 'C:\Backups\YourFile.bak' in SQL Server Management Studio (SSMS) to confirm the backup is not corrupted.
  • Check the file size on disk against the expected size from the backup history table (msdb.dbo.backupset).
  • If the file was copied over a network, re-copy it using a checksum-verified method (e.g., Robocopy with /Z and /V flags) to rule out transfer corruption.

Step 2: Confirm File Growth and Page Allocation Settings

  • Open SSMS and navigate to Database Properties > Files for the source database (if accessible) to check the original file sizes and autogrowth settings.
  • On Windows Server 2025, ensure the destination drive has sufficient free space using Get-PSDrive in PowerShell, since insufficient disk space can prevent SQL Server from pre-allocating space during restore.
  • Confirm Instant File Initialization (IFI) is enabled for the SQL Server service account via Local Security Policy > User Rights Assignment > Perform Volume Maintenance Tasks, as disabled IFI can cause file-size mismatches during large restores.

Step 3: Restore Using WITH MOVE and Correct File Sizing

  • Use the RESTORE DATABASE command with explicit MOVE clauses to ensure the destination .mdf/.ldf paths match available disk space:
  RESTORE DATABASE YourDB
  FROM DISK = 'C:\Backups\YourFile.bak'
  WITH MOVE 'YourDB_Data' TO 'D:\SQLData\YourDB.mdf',
       MOVE 'YourDB_Log' TO 'D:\SQLLogs\YourDB.ldf',
       REPLACE, RECOVERY;
  • If restoring a differential or log backup, ensure the full backup was restored WITH NORECOVERY first, maintaining the correct LSN chain.

Step 4: Re-run the Full Backup and Restore Chain

  • If the original backup file is confirmed corrupted or incomplete, take a fresh full backup from the source server using BACKUP DATABASE ... WITH CHECKSUM to catch corruption early.
  • Transfer the new backup file to the Windows Server 2025 target machine and repeat the restore process from Step 3.

Alternative or Verification Steps

  • After a successful restore, run DBCC CHECKDB('YourDB') WITH NO_INFOMSGS, ALL_ERRORMSGS to confirm there is no underlying page-level corruption in the restored database.
  • If Error 3194 persists, restore the backup to a different SQL Server 2025 instance with ample free disk space to isolate whether the issue is backup corruption or a destination server configuration problem.