sql database

This article discusses the tried and tested solutions for how the SQL database failed to open.  In this informative post, we will discuss both manual and professional solutions to accomplish the task effectively. We will also see the most common reasons behind users searching for solutions to SQL Server fails to start. So without waiting time, let’s deep dive into this blog to know more about it. 

Problem Statement 

When trying to connect to a backend MS SQL Server database, users receive an error similar to ‘Failed to connect to database’. The message is shown below. 

Msg 5120, Level 16, State 101, Line 4

Unable to open the physical file, “C:\NewDB\New Database. MDF”. 

Operating system error 5: “5 (Access is denied.)”.

Msg 1802, Level 16, State 7, Line 4



An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings, SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 – Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 1326)


ERROR: (provider: Named Pipes Provider, error: 40 – Could not open a connect settings, SQL Server) (Microsoft SQL Server, Error:) An error has occurred while establishing a connection to the server. (provider: Named Pipes Provider, error: 40 – Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 5)

Potential Reasons for Error: SQL Database Failed to Open

Several reasons that cause SQL Server fails to start error.

  • Data Storage Issue: Sometimes, less storage space that is not enough to create a new database backup can cause this type of error in the SQL Server database.
  • SQL MDF File Problem: When the user tries to connect, an appropriately separate MDF file.  This can also lead to other complex mistakes for the users.
  • Files Location Dispute: Because of SQL backup, files copied from a computer other than the destination computer can cause the SQL database failed to open the MDF file.
  • SQL Folder Conflict: The SQL Server Services is not able to access the folder because the location of the folder in the error message is not the same case where the user wants to save the backup files.
  • Corruption in Data files: Due to corrupt and damaged SQL database files like MDF and NDF can cause errors in the database.
  • Conflict of Accessing Rights: Sometimes, the user does not have proper access rights to the backup data file location assigned to an SQL Server Service account. 
  • Malware Attack: Cyberattacks like ransomware, viruses, glitches, etc. can attack SQL Server databases and can cause an error like SQL Server fails to start. 
  • Software Installed Problem: The wrong installation of software applications may also be the reason for the SQL Server error. 

SQL Database Failed to Open: Using Manual Solution 

Use this manual solution to fix the SQL database that failed to open.

Enable Complete Access to New Folder 

Steps to follow to open the SQL Server database

  1. First, navigate to the New Folder destination.
  2. Now, check the Folder properties and go to the Security option.
  3. Choose the Service Account and click the Edit button option.
  4. Now, a new Security window will pop up.
  5. Lastly, tick below the Allow checkbox option for the complete control permission. 

SQL Database Failed to Open: Automated Solution 

SQL users can get all data from the primary MDF file. However, if the above-mentioned manual method does not work, then in such a scenario, the user can use the SysTools SQL Database Recovery Tool that will repair damaged and corrupted SQL MDF files efficiently. This software effectively repairs and recovers all the important SQL objects such as triggers, functions, stored procedures, rules, views, tables, etc. Using this utility software, the user can recover deleted SQL data from MDF and NDF files and preview all its attributes. This tool displays recovered deleted records and tables in a Red color. 

Application software can easily export the SQL data into a new or current SQL Server database. This software supports all the versions of MS SQL Server such as the (2022, 2019, 2017, 2016, 2014, 2012, 2008 R2, 2005, 2000) version. The tool offers users two scanning modes, i.e., Quick scan and Advanced scan. All the Windows Operating Systems versions (11, 10, 8, and 7) with both 32-bit and 64-bit versions. This program supports all the advanced versions of data types such as geometry, geography, SQL variant, datetimeoffset, datetime2, etc. 

Follow these steps to fix SQL Server fails to start

  1. Download and execute the software application on your personal computer.
  2. Now, click to open and add the damaged MDF file to the software.
  3. Select the Quick and Advanced scan mode to check corruption in the MDF file.
  4. Afterward scanning, preview all the recovered SQL data in the MDF file. 
  5. Now, choose the export option like CSV File, SQL Server Compatible Scripts, and SQL Server Database.
  6. Lastly, hit the export button and save the file to complete the process.

Final Words 

The article covers the one manual method for SQL database failed to open using Enable Complete Access to New Folder with their detailed steps. These manual methods are time-consuming and complex to use, while a small mistake can lead to an error. So to avoid complexity and errors, we recommend using automated and secure software.

By Anurag Rathod

Anurag Rathod is an Editor of Appclonescript.com, who is passionate for app-based startup solutions and on-demand business ideas. He believes in spreading tech trends. He is an avid reader and loves thinking out of the box to promote new technologies.