Ok, so you are using both sqlmembershipprovider and activedirectory / windowsmembershipprovider?
In web.config, make sure the provider you want to be able to use to create users (SQLmembershipprovider) is setup as the first provider if you are using multiplexingmemberhipsprovider.
If you are using a custom membership provider that you have coded yourself you will need to set capabilities on that one to enable creation of users. This is done in global.asax like this (for enabling email for example):
ProviderCapabilities.AddProvider(typeof(WindowsMembershipProvider), new ProviderCapabilitySettings(0, "email")); ProviderCapabilities.AddProvider(typeof(WindowsRoleProvider), new ProviderCapabilitySettings(0));
I'm working with a site that recently has upgraded from CMS 5 to CMS 6 R2. I've ran into problems when it comes to modifying a user account (AD) or trying to add a new SQL-account. The site is an intranet and uses Windows AD to authenticate users. When I for example try to give editor rights to a user I get the following error message: