Cannot open database "C:\PROGRAM FILES (X86)\DIRECT SELLER SOLUTION\DIRECT SELLER SOLUTION\APP_DATA\MYDB.MDF" requested by the login. The login failed. Login failed for user 'MGC013\admin'.

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.NET4.5

Hi, I'm working on windows application using entity framework. Which uses local database from AppData folder of application. It is the sqlexpress database.

When I run my application , it creates database connection using the mdf file but some times it shows the errror.

Cannot open database "C:\PROGRAM FILES (X86)\DIRECT SELLER SOLUTION\DIRECT SELLER SOLUTION\APP_DATA\MYDB.MDF" requested by the login. The login failed.
Login failed for user 'MGC013\admin'.

Most important thing is , it not happens all the time and on all the machines. some time it works fine. so I can not understand the reason behind it. may be some user restriction or some database connections limit issue but I don't know where to give permission and whom.

Please help .......

Posted 10-May-15 23:56pm

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OriginalGriff · Answer 1 · 2015-05-11T00:30:00

Solution 1

It's likely that it's a permissions problem - and the best solution is never to keep data files in your application folder! Have a look here: Where should I store my data?[^] it shows some more appropraite places, and explains how to access them.

Posted 11-May-15 0:30am

OriginalGriff