SharePoint Stack Exchange is a question and answer site for SharePoint enthusiasts. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I am using SharePoint Server 2007 Enterprise with Windows Server 2008 Enterprise. I have deployed a publishing portal. I am developing a ASP.Net web application using VSTS 2008 + C# + .Net 3.5 + ASP.Net + SharePoint Server 2007 SDK.

I found sometimes we need to use SPWebApplication.FormDigestSettings.Enabled = false in order to walk around, e.g. using SharePoint API to create a site in a site collection. I want to know why we need to execute SPWebApplication.FormDigestSettings.Enabled = false? What is the reason behind the scenes?

share|improve this question
up vote 4 down vote accepted

First the definition for FormDigestSettings as per MSDN

The security validation is specific to a user, site, and time period and expires after a configurable amount of time. When the user requests a page, the server returns the page with security validation inserted. When the user then submits the form, the server verifies the security validation and if it has changed, program execution is halted and a security exception is raised.

This ensures the request you are sending is genuine,not tweaked or hacked in anyway.This validation is added every time to the page rendered by SharePoint.

Coming back to your question, you wont need to use this FormDigestSettings.Enabled=false always, provided you have the required rights to perform the operation, your code is not running in elevated mode & you are invoking the action from a SharePoint WebSite.

Reason for the last point is all the master pages of SharePoint has this entry

<SharePoint:FormDigest runat=server/>

This entry will make sure that the page is rendered with the FormDigest value. Refer this link for more information.

share|improve this answer
Cool, question answered! – George2 Feb 27 '10 at 9:48

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.