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Solution to Fix Microsoft SQL Server Error 3456

Amanda Stanford | Modified: 2020-01-17T07:56:33+05:30

Many users may get frustrated while dealing with some erroRs. If they cannot fix them in time, they will definitely face a serious problem sooner or later. Just like other applications, SQL Server is also prone to make errors. Being a server system administrator (SA), users may face some error messages at a time while working on SQL database. One of the most common errors is “Microsoft SQL Server Error 3456”. Due to this error, MDF database goes into the suspect mode. This simply means the database has many corruption issues that need to be resolved in time. In this blog, we will discuss all possible ways to fix SQL Server error 3456 in an absolute and efficient manner.

Microsoft SQL Server Error 3456 – Overview

SQL Server is the most popular relational database management system (RDBMS), which has primary function to store and retrieve data as requested by other programs. However, sometimes users may encounter an issue while working with MS SQL Server.

Basically, SQL Server uses two types of databases like MDF ( Primary ) and NDF (Secondary). Any kind of issue in these two database files may lead to SQL Server error message. One such error message is “SQL Server error 3456” that users may encounter.

Moreover, this error message signifies you to either restore database from backup or repair it.Although, you should know possible reasons for this SQL Server error. If the MDF file (master database) has corruption problem, you are likely to encounter Microsoft SQL Server error 3456. If transaction log files are corrupted due to some reason, this may be another reason for SQL Server error. If you already have a backup, then you can restore full database from it. If you have a valid backup for MDF database file, you can directly run the restore statement. To do this, you should use Microsoft SQL Server Management Studio (MSSMS).

Fix Microsoft SQL Server Error 3456 – Manual Steps

Restoring from backup is one of the method to fix SQL Server error 3456. Perform the below steps:

  • First of all, run MS SQL Server Management Studio (MSSMS) as administrator

  • Under the taskbar, click on View tab and select Object Explorer. On the other hand, you can simply press F8

  • In the Restore Database wizard, you have to mention the backup source.

  • Click on the Browse button in the particular device section
  • Choose the source device under the Select backup devices window

Remember: If there is no device present, click Add button to add one or more devices.

  • Select a backup file and press OK button
  • At last, choose the destination and restore plan and click OK button


You can also rebuild system database to fix SQL Server error 3456 or can restart your SQL Server to resolve the issue.

Resolve SQL Error 3456 – Reliable Solution

These DBCC commands will only resolve minor corruption issues. In case of severe corruption, users must prefer professional solution named as SQL Recovery tool. It is especially designed to repair corrupt MDF database file without any risk or data loss. It is capable enough to fix Suspect database error in SQL Server. The best part of this tool is that it can restore deleted records from SQL database table. It helps to recover all database files (MDF) including SQL server 2019 and all below versions.

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Summing Up

SQL Server is the preferred relational database management system, which helps to store and retrieve data. At certain times, some users may experience problems while working with MS SQL Server. One common error is SQL error 3456 that may cause database corruption. Thus, in this blog, we have discussed some manual tricks to fix Microsoft SQL Server error 3456 in a clear way. Also, we have suggested a reliable and trustworthy approach, which helps to recover entire data from MDF file.