How to fix Error 3413 on Windows Server 2025 / Windows 11

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Troubleshooting Guide: Error 3413 – Could Not Mark Database as Suspect (Getnext NC Scan Failed on sys.databases.database_id)

Why This Error Happens

Error 3413 occurs when SQL Server 2025 attempts to transition a database into the SUSPECT state but fails because the internal metadata scan on the sys.databases.database_id non-clustered index cannot complete successfully. This typically indicates corruption in the system catalog, a damaged master database, or severe I/O-level disruption that prevents SQL Server from reliably reading its own internal database registry. In most cases, this error is a secondary symptom—the root cause is usually an earlier, more fundamental failure (such as a torn page, disk failure, or storage timeout) that is logged separately in the SQL Server Error Log just before this message appears.

Step-by-Step Resolution Guide

Step 1: Review the Full SQL Server Error Log for the Root Cause

  • Open SQL Server Management Studio (SSMS) and navigate to Management > SQL Server Logs, or review the raw log file at C:\Program Files\Microsoft SQL Server\MSSQL17.MSSQLSERVER\MSSQL\Log\ERRORLOG.
  • Look for errors immediately preceding Error 3413, such as Error 823, 824, or 825 (I/O errors), which usually point to the actual underlying storage or corruption issue.
  • Note the specific database_id referenced in the error to identify which user database triggered the failure.

Step 2: Check Storage Health and Windows Event Viewer

  • Open Event Viewer on Windows Server 2025 / Windows 11 and inspect the System and Application logs under Windows Logs for Disk, NTFS, or storage controller warnings.
  • Run chkdsk C: /f /r (adjust drive letter to match your data/log file volume) during a scheduled maintenance window to repair file system-level corruption.
  • Verify that the underlying storage (SAN, local disk, or virtual disk) is not reporting latency spikes or hardware faults using Windows Performance Monitor (PerfMon) counters like Avg. Disk sec/Read and Avg. Disk sec/Write.

Step 3: Run Integrity Checks on the Master Database

  • Stop non-essential workloads and run the following in SSMS or sqlcmd:
  DBCC CHECKDB ('master') WITH NO_INFOMSGS, ALL_ERRORMSGS;
  • If corruption is found in master, you may need to restart SQL Server in single-user mode using sqlservr.exe -m from an elevated Command Prompt and rebuild system databases using setup.exe /ACTION=REBUILDDATABASE from the SQL Server 2025 installation media if repair is not possible.

Step 4: Run DBCC CHECKDB on the Affected User Database

  • Once master is confirmed healthy, run integrity checks against the database ID flagged in the error:
  DBCC CHECKDB ('YourDatabaseName') WITH NO_INFOMSGS, ALL_ERRORMSGS;
  • If corruption is detected, restore from the most recent verified backup rather than using REPAIR_ALLOW_DATA_LOSS, unless no valid backup exists.

Step 5: Restart the SQL Server Service and Monitor

  • Restart the SQL Server (MSSQLSERVER) service via services.msc or by running:
  Restart-Service -Name 'MSSQLSERVER' -Force
  • Monitor the Error Log closely for 24–48 hours to confirm Error 3413 does not recur, especially during high I/O periods like index maintenance or backup jobs.

Alternative or Verification Steps

  • Confirm resolution by querying sys.databases directly (SELECT name, state_desc FROM sys.databases;) to ensure all databases show ONLINE status with no residual SUSPECT entries.
  • If the error persists after storage and integrity checks, engage Microsoft Support with the full Error Log and a DBCC CHECKDB output, as this may indicate a deeper SQL Server Engine-level bug requiring a Cumulative Update or hotfix.