Fix SQL Server Error 3456 Severity 21 State 1 : Top 2 Ways

Fix SQL Server Error 3456 Severity 21 State 1 : Top 2 Ways

June 06, 2024

In today’s digital era, SQL Server has become an important part of our daily lives. It stores, manages, and retrieves crucial data, making it accessible to both technical and non-technical users. It can easily handle large amounts of data and numerous simultaneous queries. However, there are instances when SQL users need a solution to resolve SQL Server error 3456 severity 21 state 1.

In this guide, we will discuss the best and most reliable solution to fix this issue without any trouble. So, before we move on to the solution part to resolve this “Error 3456 SQL Server” issue. Let's take a quick overview of the potential reasons. 

Potential Causes Behind Error 3456 Severity 21 State 1 

There are many factors responsible for the SQL Server error 3456. Here are some of the common causes behind this Error 3456 - 

  1. Corrupted Transaction Log Files 
  2. Improper system Shutdown 
  3. Insufficient Disk Space 
  4. Disk Issue 
  5. Software Bugs
  6. Hardware Failure
  7. Viruses and Bugs 
  8. File system problem 
  9. Memory issue 


These are only a few of the most common factors that you should grasp. In the next section, we will discuss two techniques - one is manual and the other is a professional solution to fix the “Error 18456 severity 14 state 38 login failed” issue.

Method 1: Fix SQL Server Error 3456 Severity 21 State 1 Manually 

The next section discusses a manual technique for fixing Error 3456 SQL Server. However, there may be a risk if you are unfamiliar with the procedure.

Follow the below-mentioned steps carefully: 

  1. Open MS SQL Server Management Studio (SSMS) as administrator on your PC.
  2. In the taskbar, hit the View tab and select the Object Explorer. Although , you can simply press the F8 key. 
  3. In the Restore Database window, you have to mention the backup source.
  4. After that, Hit the Browse button in the particular device section
  5. Now, choose the source device under the Select Backup Devices window
  6. Remember: If no devices are available or present, click the Add button to add one or more.
  7. Then, Select the  backup file and press the OK button
  8. Finally, choose the destination and restore plan and click on the OK button

Method 2: Professional Solution to Fix SQL Server Error 3456 Severity 21 State 1 

If you want to fix SQL Server error number 18456 severity 14 state 1 , then you can only trust the RecoveryTools SQL Database Recovery Tool . This tool is specially designed to repair and recover corrupted database files (MDF/LDF). It enables users to preview and recover deleted database objects such as - stored procedures, tables, functions, views, and more. 

Moreover, it has a graphical user interface so that even a technical or non-technical user can also use it without having any technical expertise. The software supports Windows OS versions 7, 8, 10, and 11 with the support of both 32 and 64-bit versions and is compatible with all the MS SQL Server versions 2022, 2019, 2017, and below versions.

Follow the below-mentioned steps to fix Microsoft Error 3456 SQL Server:

Step 1. Install the software on your computer to learn how to resolve SQL Server error 3456 severity 21 state 1  issue. 

Step 2. From the software menu, hit the open button to upload the MDF file. 

Step 3. Then, you have to choose the scan mode option, we suggest going for the advanced scan mode option and selecting the SQL server version of your MDF file.

Step 4. Now, preview the recovered database objects (like- table, triggers, functions, etc) and click on the Export option on top as shown in the image.

Step 5. After that, choose the export option- SQL Server Database, SQL Server Compatible Script, CSV File Format accordingly.

Step 6. Finally, choose either “with the only schema” or “with Schema and data” option based on your requirement and hit the export button to begin the export process. 

Concluding Words

In this technical guide, we explored both manual as well as professional solutions to fix SQL Server error 3456 severity 21 state 1. Now, it's up to you to which method you want to use - a manual or a professional solution. However, manual solutions can be tricky if you are a non-technical user and don’t have in-depth knowledge about the SQL Server. Therefore, we highly recommend going for a professional solution. It is 100% safe and easy for both tech-savvy and non-tech users.


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