I have installed sharepoint 2010 trial on Win 7 , After installation when im trying to run sharepoint configuration wizard im getting following error on step 4, UnauthorizedAccessException , Im attaching the exception log. A NotifyEventArgs event received in TaskNotifyEventHandler. Task: secureresources NotifyEventArgs.EventCriticalityType: Successfully secured resource 'HKEY_LOCAL_MACHINE\Software\Microsoft\Shared Tools\Web Server Extensions\14.0\Search' of type 'RegKey' by granting security group 'WSS_ADMIN_WPG' 'Full Control' permissions . Message: info 03/29/2011 10:54:17 1 INF Acquiring the reader lock to retrieve the state 03/29/2011 10:54:17 1 INF Releasing the reader lock to retrieve the state 03/29/2011 10:54:17 1 INF Acquiring the reader lock to retrieve the state 03/29/2011 10:54:17 1 INF Releasing the reader lock to retrieve the state 03/29/2011 10:54:17 1 INF Updating the task notification additional message label 03/29/2011 10:54:17 1 INF Not running in high contrast, so we will paint the background with our trademarked image 03/29/2011 10:54:17 1 INF Not running in high contrast, so we will paint the background with our trademarked image 03/29/2011 10:54:17 1 INF Not running in high contrast, so we will paint the background with our trademarked image 03/29/2011 10:54:17 1 INF Not running in high contrast, so we will paint the background with our trademarked image 03/29/2011 10:54:17 1 INF Leaving function ConfigurationProgressForm.InvokeTaskNotifyEventHandler 03/29/2011 10:54:17 10 INF Sleeping an extra 1 ms so things don't go too fast for the user for this task 03/29/2011 10:54:17 1 INF Not running in high contrast, so we will paint the background with our trademarked image 03/29/2011 10:54:17 10 INF Leaving function PsconfigBaseForm.TaskNotifyEventHandler 03/29/2011 10:54:17 10 INF Leaving function TaskBase.FireTaskNotify 03/29/2011 10:54:17 10 INF Leaving function TaskBase.OnTaskNotify 03/29/2011 10:54:17 1 INF Not running in high contrast, so we will paint the background with our trademarked image 03/29/2011 10:54:17 1 INF Not running in high contrast, so we will paint the background with our trademarked image 03/29/2011 10:54:17 1 INF Not running in high contrast, so we will paint the background with our trademarked image 03/29/2011 10:54:17 10 ERR Task secureresources has failed with an unknown exception 03/29/2011 10:54:17 1 INF Not running in high contrast, so we will paint the background with our trademarked image 03/29/2011 10:54:17 1 INF Not running in high contrast, so we will paint the background with our trademarked image 03/29/2011 10:54:17 1 INF Not running in high contrast, so we will paint the background with our trademarked image 03/29/2011 10:54:17 1 INF Not running in high contrast, so we will paint the background with our trademarked image 03/29/2011 10:54:17 1 INF Not running in high contrast, so we will paint the background with our trademarked image 03/29/2011 10:54:17 1 INF Not running in high contrast, so we will paint the background with our trademarked image 03/29/2011 10:54:17 1 INF Not running in high contrast, so we will paint the background with our trademarked image 03/29/2011 10:54:17 1 INF Not running in high contrast, so we will paint the background with our trademarked image 03/29/2011 10:54:17 1 INF Not running in high contrast, so we will paint the background with our trademarked image 03/29/2011 10:54:17 1 INF Not running in high contrast, so we will paint the background with our trademarked image 03/29/2011 10:54:17 1 INF Not running in high contrast, so we will paint the background with our trademarked image 03/29/2011 10:54:17 1 INF Not running in high contrast, so we will paint the background with our trademarked image 03/29/2011 10:54:17 1 INF Not running in high contrast, so we will paint the background with our trademarked image 03/29/2011 10:54:17 10 ERR Exception: System.UnauthorizedAccessException: Attempted to perform an unauthorized operation. at System.Security.AccessControl.Win32.SetSecurityInfo(ResourceType type, String name, SafeHandle handle, SecurityInfos securityInformation, SecurityIdentifier owner, SecurityIdentifier group, GenericAcl sacl, GenericAcl dacl) at System.Security.AccessControl.NativeObjectSecurity.Persist(String name, SafeHandle handle, AccessControlSections includeSections, Object exceptionContext) at System.Security.AccessControl.NativeObjectSecurity.Persist(String name, AccessControlSections includeSections, Object exceptionContext) at System.Security.AccessControl.FileSystemSecurity.Persist(String fullPath) at System.IO.FileInfo.SetAccessControl(FileSecurity fileSecurity) at Microsoft.SharePoint.Administration.SPResourceAccess.SetFileAccessRule() at Microsoft.SharePoint.Administration.SPResourceAccess.SecureResources(Boolean isSingleBox, EventHandler`1 progressUpdateEvent) at Microsoft.SharePoint.PostSetupConfiguration.SecurityTask.Run() at Microsoft.SharePoint.PostSetupConfiguration.TaskThread.ExecuteTask() please help me, im new to sharepoint.