Sitefinity Backend Login error after installing Windows 10

Hi there,

After upgraded my machine to Windows 10, I'm unable to login to my Sitefinity website's backend. It's Sitefinity 8.1.5800.0 instance, and it's running fine before my upgrade. The backend login screen is shown up, but when I enter login incormation and push Login button, it throws exception as below:

[InvalidCastException: Unable to cast object of type 'Microsoft.IdentityModel.Claims.ClaimsPrincipal' to type 'Telerik.Sitefinity.Security.SitefinityPrincipal'.] Telerik.Sitefinity.Security.Web.UI.LoginForm.LoginForm_Authenticate(Object sender, AuthenticateEventArgs e) +198 System.Web.UI.WebControls.Login.OnAuthenticate(AuthenticateEventArgs e) +9709838 System.Web.UI.WebControls.Login.AttemptLogin() +119 System.Web.UI.WebControls.Login.OnBubbleEvent(Object source, EventArgs e) +75 System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +37 System.Web.UI.WebControls.LinkButton.OnCommand(CommandEventArgs e) +121 System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) +161 System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +12 System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +15 System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +9775330 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1639

Please advice. Any help is appreciated.

Thanks!