I installed DotNetNuke 5.0 and then went through the DNN Registration. After I logged out and tried using the Login function I got this error; A critical error has occurred. Method not found: 'System.Collections.Hashtable DotNetNuke.Services.Authentication.AuthenticationConfigBase.get_ModuleSettings()'. After making all the recommended changes in this forum to the web.config without any success at all I tried following this advice by Mike Horton; "Open the Authentication table in the database and removed the entries for Active Directory and Cardspace if they are there." Now I am getting this error instead: [SqlException (0x80131904): Login failed for user 'RichG'.] System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +578 System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +88 System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +6265031 System.Data.SqlClient.SqlConnection.Open() +258 Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteReader(String connectionString, CommandType commandType, String commandText, SqlParameter[] commandParameters) +352 Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteReader(String connectionString, CommandType commandType, String commandText) +71 Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteReader(String connectionString, String spName, Object[] parameterValues) +390 DotNetNuke.Data.SqlDataProvider.GetHostSettings() +101 DotNetNuke.Entities.Host.Host.GetHostSettingsDictionary() +128 DotNetNuke.Entities.Host.Host.GetHostSetting(String key) +58 DotNetNuke.Entities.Host.Host.get_SchedulerMode() +22 DotNetNuke.Services.Scheduling.SchedulingProvider.get_Enabled() +9 DotNetNuke.Services.Log.EventLog.DBLoggingProvider.DBLoggingProvider.AddLog(LogInfo objLogInfo) +661 DotNetNuke.Services.Log.EventLog.LogController.AddLog(LogInfo objLogInfo) +286 What am I missing here?