Error navigating to administration section - Value cannot be

Hi , I am new to Sitefinity. I am using a trial version 8.1.5800.0 for development purpose.  I am getting this error while trying to navigate to administration section. Any help will be greatly appreciated.

Exception Details: System.ArgumentNullException: Value cannot be null.
Parameter name: node

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:

[ArgumentNullException: Value cannot be null. Parameter name: node] Telerik.Sitefinity.Web.RouteHelper.SslRedirectIfNeeded(HttpContextBase httpContext, PageSiteNode node) +122 Telerik.Sitefinity.Modules.Pages.PageManager.RenderPage(HttpContextBase context, Guid pageNodeId, Action`1 pageAction) +99 Telerik.Sitefinity.Security.Claims.ClaimsResolver.RenderLoginForm(HttpContextBase context, String errorMessage) +134 Telerik.Sitefinity.Security.Claims.SecurityTokenServiceHttpHandler.SendLoginForm(HttpContextBase context, String message) +19 Telerik.Sitefinity.Security.Claims.SecurityTokenServiceHttpHandler.ProcessRequest(HttpContextBase context) +1349 Telerik.Sitefinity.Security.Claims.SecurityTokenServiceHttpHandler.ProcessRequest(HttpContext context) +40 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +188 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +69 ​

Hi Kiruthiga,

Would you please check the and ensure that all the IIS settings are correct as per the articles below:
- http://docs.sitefinity.com/configure-the-iis-to-host-sitefinity-projects
- http://docs.sitefinity.com/run-projects-on-iis-7-0-and-above

In case you are using SSL you can also take a look here:
http://docs.sitefinity.com/administration-configure-ssl

I hope this information helps.

Regards,
Svetoslav Manchev
Telerik