The following additional tips MSSQL database error: Can not open the physical file "*** mdf.". Operating system error 5: "5 (Access is denied.)." (Microsoft SQL Server, Error: 5120)

The following additional tips MSSQL database error: Can not open the physical file "*** mdf.". Operating system error 5: "5 (Access is denied.)." (Microsoft SQL Server, Error: 5120)

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Solution:

Right require additional database file, a property dialog box, select the Security tab.

Add Authenticated Users user name. Assign Full Control permissions for the Authenticated Users user. Then attach the database again, attach the database successfully.