How to fix Error 4346 on Windows Server 2025 / Windows 11

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Troubleshooting Guide: Error 4346 – RESTORE PAGE Not Allowed

Why This Error Happens

Error 4346 occurs because page-level restores require the database to be in the FULL or BULK_LOGGED recovery model, as this operation depends on an unbroken chain of transaction log backups to roll the restored pages forward to a consistent state. If the database uses the SIMPLE recovery model, log records are truncated automatically and cannot support this process. Additionally, if the log backup chain has been broken—due to a missed log backup, a switch to SIMPLE and back to FULL, or an unlogged operation—SQL Server cannot guarantee page consistency, so it blocks the restore.

Step-by-Step Resolution Guide

Step 1: Verify the Current Recovery Model

  • Open SQL Server Management Studio (SSMS) or run a query against the target database on your SQL Server 2025 instance.
  • Execute: SELECT name, recovery_model_desc FROM sys.databases WHERE name = 'YourDatabaseName';
  • Confirm whether the result returns SIMPLE. If so, this is the root cause and must be changed before proceeding.

Step 2: Switch to the FULL Recovery Model

  • Run the following T-SQL command in a new query window:
    ALTER DATABASE YourDatabaseName SET RECOVERY FULL;
  • Immediately take a full database backup to establish a new backup baseline, since switching recovery models invalidates the previous log chain:
    BACKUP DATABASE YourDatabaseName TO DISK = 'C:\SQLBackups\YourDatabaseName_Full.bak';

Step 3: Re-establish an Unbroken Log Backup Chain

  • Schedule or manually run a transaction log backup immediately after the full backup to start a valid chain:
    BACKUP LOG YourDatabaseName TO DISK = 'C:\SQLBackups\YourDatabaseName_Log1.trn';
  • Check the SQL Server Agent Job history (via SSMS > SQL Server Agent > Jobs) to ensure no log backup jobs failed or were skipped, as this breaks the chain even in FULL recovery mode.
  • Avoid running any minimally logged operations (like BULK INSERT with TABLOCK in BULK_LOGGED mode) between your backups, as this can interfere with future page restore granularity.

Step 4: Retry the RESTORE PAGE Command

  • Once the full backup and at least one subsequent log backup are completed, re-attempt the page restore operation:
    RESTORE DATABASE YourDatabaseName PAGE = '1:258' FROM DISK = 'C:\SQLBackups\YourDatabaseName_Full.bak';
  • Follow this immediately with a restore of the log backups taken after the full backup to bring the page current:
    RESTORE LOG YourDatabaseName FROM DISK = 'C:\SQLBackups\YourDatabaseName_Log1.trn';

Alternative or Verification Steps

  • Verify the fix: Query sys.databases again to confirm recovery_model_desc shows FULL, and check last_log_backup_lsn in the same view to ensure it is populated (not NULL), confirming the log chain is intact.
  • Alternative solution: If the log chain remains broken or page restore still fails, perform a full database restore instead using RESTORE DATABASE YourDatabaseName FROM DISK = 'C:\SQLBackups\YourDatabaseName_Full.bak' WITH REPLACE, followed by sequential log restores to recover the damaged pages without relying on page-level granularity.