Episerver Alloy – Could not open new database – File activation failure

Someone asked me today how to fix this error that he encountered after creating a new Episerver MVC project with the Alloy Template. I remember seeing this before myself and so I’m putting up a post for those out there who encounter the same problem.

Server Error in ‘/’ Application.
Could not open new database ‘EPiServerDB’. CREATE DATABASE is aborted.
Cannot attach the file ‘EPiServerDB.mdf’ as database ‘EPiServerDB’.
File activation failure. The physical file name “EPiServerDB_log.ldf” may be incorrect.
The log cannot be rebuilt when the primary file is read-only.
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.


  1. Run your Visual Studio as Admin OR go to your App_Data folder and give your user Full Control on the folder
  2. AND update your web.config to add the two attributes on your epi framework config

The combo above has fixed his issue.

If it hasn’t, try this thread which may have other solutions that hopefully applies to you.

%d bloggers like this: