How to Fix SQL Error 5171 Renders SQL Database

It is well known fact that MS SQL database offers an administrative ease to system users by providing enhanced productivity, scalability and efficiency. It is one of the popular and extensively used databases among the masses. You can easily handle huge amount of data using this reliable database. But, at the same time nobody can ignore from the fact that the existing database gets corrupted or becomes inaccessible due to several reasons. As, a result, numerous of irritating errors gets emerges in midway. SQL error 5171 is also one among them which gets emerges and prevents the proper execution of your database processes.

One common scenario regarding this is that, At times it happens that your system closes unexpectedly while you are working on SQL Server database. After restarting the system you are unable to open your MDF file and receives following error message:

An exception occurred while executing a Transact-SQL statement or batch. _db.mdf is not a primary database file. (Microsoft SQL Server, Error: 5171).”


C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Data\MYDATABASE.mdf is not a primary database file. (Microsoft SQL Server, Error: 5171)”

Usually, users ignore SQL error 5171 and try to attach single file using sp_attach_single_db stored procedure but, receive another error message. Once the error appears your SQL database becomes inaccessible and it might happen that you lose all your essential data. Now, here a question arises that why such catastrophic situation gets emerges in midway while accessing your database?

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Causes Responsible for SQL Error 5171

  • Power failure.
  • Abrupt shut down of system.
  • Damaged Index.
  • File header corruption.
  • Damaged media.
  • Virus infections.
  • Human errors.

All above mentioned factors can damage your SQL database and give rise to SQL error 5171. But, the major reasons responsible for the error is corruption in SQL file header which might occur due to the presence of invalid entries. After the occurrence of such panic error, your database gets rendered and becomes inaccessible. But, you don’t have to be worried! You can access it by restoring your database using current available backup. But, what if you fails to have a proper backup!! Its really going to be a panic situation for any one of us. Now, to fix SQL error 5171 and to re-access your problem, you have to use third party software MS SQL Database Repair Software.

More About MS SQL Database Repair Software

It is an effective software that can safely repair your corrupt indexes, tables, procedure etc. and makes it accessible. Its advance algorithm will surely rectify any sort of database related issues. In addition, the tool has also been developed with easy to use interface that makes the recovery even more simpler and easier. Last but not the least, the MS SQL Database Repair Software is well compatible with all versions of MS SQL like SQL Server 2000, 2005, 2008 etc. So, try it and get your problem be solved.

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