Are you using a customized Login View control. I have tried to reproduce what you are explaining. As I went to the public part of the web site and clicked Logout in the Login View control it logged me out, both from the public and administrative part of the web site. I have tested it both with users created with my custom control and through Sitefinity. The control is logging me out and refreshes the page. However you can set custom behavior to your Login View control. To do this:
1) Open your Sitefinity web-site in Visual Studio
2) Go to folder Sitefinity\UserControls\Login
3) Open the LoginViewControl.ascx
file and set the desired behavior.
For example, I have added
to this line:
|( <asp:LoginStatus ID="LoginStatus1" runat="server" LogoutPageUrl="~/Default.aspx"
| LogoutAction="RedirectToLoginPage"/> )
This redirects me to my Sitefinity Login Page.
As for reseting your administrator password, please read:
Resetting Administrator Password
I hope that this will answer your questions. If you need anything else, please feel free to contact us.
the Telerik team