I'm newbe in asp.net and sitefinity, I got project from other developer, when I open url localhost:46522/.../Administration I get error
The configured Role Provider (WindowsTokenRoleProvider) relies upon Windows authentication to determine the groups that the user is allowed to be a member of. ASP.NET Role Manager cannot be used to manage Windows users and groups. Please use the SQLRoleProvider if you would like to support custom user/role assignment.
How can I fix it?