Remote Web Workplace not operating in SBS 2008 or EBS 2008

If when you log into Remote Web Workplace on Small Business Server 2008 or Essential Business Server 2008 as a non-administrator user you get the following error messages:

Cannot connect to the Remote Web Workplace site. To continue, contact your network administrator.

Event Viewer/Application Log/ASP.NET 2 Warning: Event ID 1309
ArgumentOutOfRangeException “Index was out of range. Must be non-negative and less than the size of the collection.” Request URL: https://server:443/remote/menu.aspx

You need to do the following to fix this error. On the server you need to modify the permissions of the RWWConfig.xml file. This file is located in “C:\Program Files\Windows Small Business Server\Data” or “C:\Program Files\Windows Essential Business Server\Data” depending upon the product that you are running.

1. Ensure the permissions on the above file are
   Authenticated Users – Read (not inherited)
   NETWORK SERVICE – Read (not inherited)
   SYSTEM – Full Control (inherited from parent folder)
   Administrators – Full Control (inherited from parent folder)
2. Make sure the Authenticated Users group is a member of the Pre-Windows 2000 Compatible Access group.
3. Run iisreset from the command line on the server
4. Attempt the login again, but first close any copy of Internet Explorer that was running (or attempting to run) RWW.