Symptoms

Rule does not respond or update when being saved
 

Diagnoses

I created a rule on a form, but when I attempt to save the rule, nothing happens. I checked the error logs on our server and I found the attached error.

The rule is straight forward, let me know if you want me to show you or walk you through it.

The following error is found:
Exception on 2015-03-03T23:21:24.7315428Z
Exception:
System.Web.HttpException (0x80004005): Maximum request length exceeded.
at System.Web.HttpRequest.GetEntireRawContent()
at System.Web.HttpRequest.FillInFormCollection()
at System.Web.HttpRequest.EnsureForm()
at System.Web.HttpRequest.get_Form()
at System.Web.Security.FormsAuthenticationModule.ExtractTicketFromCookie(HttpContext context, String name, Booleanand cookielessTicket)
at System.Web.Security.FormsAuthenticationModule.OnAuthenticate(FormsAuthenticationEventArgs e)
at System.Web.Security.FormsAuthenticationModule.OnEnter(Object source, EventArgs eventArgs)
at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Booleanand completedSynchronously)
URL: /Designer/Rules/AJAXCall.ashx
QueryString:
Headers:
Connection:keep-alive
Content-Length:16799379
Content-Type:application/x-www-form-urlencoded charset=UTF-8
Accept:text/plain, */* q=0.01
Accept-Encoding:gzip, deflate
Accept-Language:en-US,enq=0.8
Cookie:.K2AUTH=4fEEouS_ZJ1XaVN-
 

Resolution

Increasing the maxRequestLength to for the Designer web.config, allowed the form to be saved. Default value for this is "16384". MaxRequestLength indicates that the web request is hitting the ASP limit as per:

http://forums.iis.net/t/1169846.aspx