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Hi I use VS.NET 2010
SQL express

I have generated an windows application. I have used .MDF file.
The project is working fine but when I have attached setup project to it and installed it. The permission of .mdf file get changed and become read only not able to write/update.
At the local computer and other computer with windows 7 installation ,I can change the database but when I setup my application on the other computer with windows 8 installation , it cant change database and send "Failed update .mdf...." error message.
When I manually change the permission of the .mdf & .ldf file for "Users" to full control it works. But I want to set the full control permission with my setup automatically .
How can I do that?

I run my application as an administrator, and the .mdf & .ldf files have full control permission for Administrator users. At this state is doesnt work,too . But when I set the full control for "Users" , it works!. I dont know why?
Updated 4-Aug-14 12:48pm

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