Unable to open the physical file "C:\Database\database.mdf". Operating system error 5: "5(Access is denied.)"

When you attach a database you might get the error below.


Unable to open the physical file “C:\Database\Commerce.mdf”. Operating system error 5: “5(Access is denied.)”. (Microsoft SQL Server, Error: 5120)


What you need to do is to assign the right to the Users account. Of course this is one of the development’s ways. You might want to set for a specific user account for deployment.


About chanmingman

Since March 2011 Microsoft Live Spaces migrated to Wordpress (http://www.pcworld.com/article/206455/Microsoft_Live_Spaces_Moves_to_WordPress_An_FAQ.html) till now, I have is over 1 million viewers. This blog is about more than 50% telling you how to resolve error messages, especial for Microsoft products. The blog also has a lot of guidance teaching you how to get stated certain Microsoft technologies. The blog also uses as a help to keep my memory. The blog is never meant to give people consulting services or silver bullet solutions. It is a contribution to the community. Thanks for your support over the years. Ming Man is Microsoft MVP since year 2006. He is a software development manager for a multinational company. With 25 years of experience in the IT field, he has developed system using Clipper, COBOL, VB5, VB6, VB.NET, Java and C #. He has been using Visual Studio (.NET) since the Beta back in year 2000. He and the team have developed many projects using .NET platform such as SCM, and HR based applications. He is familiar with the N-Tier design of business application and is also an expert with database experience in MS SQL, Oracle and AS 400.
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3 Responses to Unable to open the physical file "C:\Database\database.mdf". Operating system error 5: "5(Access is denied.)"

  1. Habi says:

    I had this issue and all the solutions online was kind of misleading to my issue. I have the solution here.
    The solution was to Run SSMS as Administrator.

  2. lowphat01 says:

    Thanks Habi. That worked for me too. Run SSMS as administrator!!!

  3. Pingback: How To Fix Fcleaner Unable Unable To Open Database File Errors - Windows Vista, Windows 7 & 8

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