After upgrading to 5.10, facing unhandled exception when navigating to the web administration page > Mailbox Assignment > [...]
[HttpAntiForgeryException (0x80004005): The required anti-forgery form field "__RequestVerificationToken" is not present.]
System.Web.Helpers.AntiXsrf.TokenValidator.ValidateTokens(HttpContextBase httpContext, IIdentity identity, AntiForgeryToken sessionToken, AntiForgeryToken fieldToken) +483
System.Web.Helpers.AntiXsrf.AntiForgeryWorker.Validate(HttpContextBase httpContext) +71
System.Web.Helpers.AntiForgery.Validate() +92
Quest.AM.Website.Controls.LoginSearch.Page_Load(Object sender, EventArgs e) +37
System.Web.UI.Control.OnLoad(EventArgs e) +97
System.Web.UI.Control.LoadRecursive() +61
System.Web.UI.Control.LoadRecursive() +134
System.Web.UI.Control.LoadRecursive() +134
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693
This issue is caused by a defect in the Quest.AM.Website.dll file included with version 5.10.
The affected DLL does not properly generate or handle the required anti-forgery token during page load, resulting in the ASP.NET runtime throwing an HttpAntiForgeryException.
In essence, the web component responsible for validating user form submissions fails due to missing anti-forgery token handling logic introduced in this build.
