Hi guys,

I've been making this website and everything was working great until all of the sudden i'm getting this error msg:

Unable to open the physical file. "E:\work\Websites\cambioclimatico\App_Data\Database.mdf" Operating system error 5: "5(Access is denied.)".
An attempt to attach an auto-named database for file "E:\work\Websites\cambioclimatico\App_Data\Database.mdf"
A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Data.SqlClient.SqlException: Unable to open the physical file "E:\work\Websites\cambioclimatico\App_Data\Database.mdf". Operating system error 5: "5(Access is denied.)".
An attempt to attach an auto-named database for file E:\work\Websites\cambioclimatico\App_Data\Database.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
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I was working on 3 sites simultanously and this was the only one that got this error. The only thing I can think of that could have affected this is that I attached the DB to backup and then dettached it. I'm using sql server express and didn't have to setup permissions or databases or anything like that, cuz I used the default web.config configuration that sets up de DB.

Does anyone have an Idea of what's going on?