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View Mac State Error In Asp.net

I'll have a look if I can apply these suggestions to my problem. I installed the latest SP and when I run the app through VS2008 and perform the clicking, the error still persist. this was exactly the problem i was having with my site https://support.microsoft.com/en-us/kb/2915218

If EventValidation is enabled (which it is, by default), but ASP.net doesn't see the hidden field when you postback, you also get the exception. After he submits that page he is redirected to the first page with th erefresh meta tag. Maybe there is not a simple way, but just thought i would ask? This includes promotion of commercial and non-commercial products or services which are not directly related to DNN.

This will ensure that these things get written out before anything that can submit the form: protected override void Render(System.Web.UI.HtmlTextWriter writer) { System.IO.StringWriter stringWriter = new System.IO.StringWriter(); HtmlTextWriter htmlWriter = Permalink Posted 19-Mar-14 0:46am kobusv396 Rate this: Please Sign up or sign in to vote. I shoot a mail to MS Support team too. Mike Banavige Reply Kumar Reddi Contributor 5741 Points 2608 Posts Re: Validation of viewstate MAC failed error....

Validation of viewstate MAC failed error.... I have tried numerous other solutions to no avail. regards. Reply Jon says: October 22, 2008 at 5:31 am Can anyone give me ‘THE' accepted solution for this problem?

Otherwise, I don't know of a way without code changes. Watch Queue Queue __count__/__total__ Find out whyClose Validation of Viewstate MAC failed. Reply John Smith says: April 1, 2010 at 3:18 pm Very interesting. It appears if you have a large page which loads slowly for any reason.

Reply Greg says: July 17, 2009 at 1:26 pm Excellent post!! 2 days spent looking for the reason for this untill I spotted that the __EventValidation is missing altogether! http://forums.asp.net/t/906759.aspx?Validation+of+viewstate+MAC+failed+error+ as far as what you're trying to say goes... Client IP: 185.23.... Client IP: 127.0.0.1 Port: 3055 User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.1.4322; .NET CLR 2.0.50215) ViewState: dDwyMDkyODcyMDU2Ozs+WFHLNHq+OxsoSkwgopSp/4SdPCU= Referer: http://localhost Path: /Default.aspx] [HttpException (0x80004005): Validation of viewstate MAC

This feature is implemented by having controls register valid events when they render (as in, during their actual Render() methods). Workarounds 1. Then installed 2.0.50727.42. > the page worked Then installed when I started installing .NET 3.0 and 3.5, it included updates on .NET 2.0 that took it to SP2. > The fact that the error occurs in a development environment indicates that you must understand why it occurred if you hope to avoid having it rear its uglyhead in a production

The problem came out only after the machine was updated with the .NET framework 3.5. Yours did the trick! This issue is STILL happening. If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm.

Still the error persistes. Reply ASP.NET Debugging says: May 28, 2008 at 10:20 am Shetty, I hope this page helped you then. Thanx its working Please tell me how it is working, and why this exception occur 0 Back to top MultiQuote Reply #5 Eugene Advanced Member Group: Members Posts: 295 Joined:

iam getting the above error in my website can anybody help me?

Any ideas are welcome.Thanks again for your help. 10/7/2014 7:47 PM Martin Joined: 6/14/2013 Posts: 3 Re: Invalid viewstate / Validation of viewstate MAC failed Thanks for your responses. If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. mmmmmmmk! Hope that helps someone out there.

Any ideas on how to fix? When the error occurs, the first request of the session is a POST. as i read many problems related to this.. Nov 04, 2005 04:17 PM|uswebpro|LINK no - not timeouts just one page has a btn, its action (when clicked) is a response.redirect to another page in the same folder.

Reply J. share|improve this answer answered Apr 8 at 11:07 Hassan Nazeer 312 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign Loading... Thanks Reply Thomas says: April 3, 2008 at 7:23 am A common thread in this is problems with the Viewstate in a hidden field - we use Infragistics GridView controls and

I do not know why those errors occurs. Permalink Posted 5-Feb-16 22:51pm Jamsheer Moideen144 Rate this: Please Sign up or sign in to vote.