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Viewstate Mac Validation Error

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Jul 25, 2011 10:21 AM|subhash.sheladia|LINK Hi All, enableViewStateMac="false" This option will work perfectly, but it is always advisable to go with specifying the custom key for encryption and decryption in Consequently, my bloated program was consuming a lot of memory and/or resources at their server(s), and after 3 minutes or so the site's server memory manager (sorry for my lingo-does such I've tried just about everything I can on this page and nothing works. Up next How To Generate Machine Key In IIS - Duration: 2:34. have a peek at this web-site

The AutoGenerate for the machine code can not be used. I hpe I was able to explain the issue. When a postback occurs, ASP.NET uses the values stored in this hidden field to ensure that the button you clicked invokes a valid event. Jul 22, 2010 12:35 PM|surya_bg2000|LINK Even i have ended with this issue &it worked for me with belowchanges in web.config:

Thanks, B Gopal Surya Prakash

Validation Of Viewstate Mac Failed Error Solution

But if we force the browser to reload, the message is gone. You can find a couple of decoders on Scott's blog at: http://weblogs.asp.net/scottgu/archive/2003/02/16/2495.aspx Reply Tony says: September 15, 2009 at 2:07 pm Re: Ron's comment - I have exactly the same issue Out of options now! Yes, times for rendering large amounts of viewstate, and ‘premature' postbacks cause this.

If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validationalgorithm. General FAQ Ask a Question Bugs and Suggestions Article Help Forum Site Map Advertise with us About our Advertising Employment Opportunities About Us Ask a Question All Questions All Unanswered FAQ After reading this article 2 or 3 times and after I tried the solutions in the article (did not solve my problem), I discovered, in the problematic Web page, an old Validation Of Viewstate Mac Failed Autogenerate Cannot Be Used In A Cluster PS i was using XP as my OS.

Working... Invalid Viewstate Mac Failed That entire article is excellent and I highly recommend reading it! Read past end of file to recover data Is there an English idiom for provocative titles, something like "yellow title"? http://www.codeproject.com/Questions/464873/Validation-of-viewstate-MAC-failed Solution 2 Accept Solution Reject Solution Validation of viewstate MAC failed.

in IE and other it is working fine. Validation Of Viewstate Mac Failed Solution Think of another area…what about the firewall? Disabling Sort fixed my issue. The details of the problem is: Validation of viewstate MAC failed.

Invalid Viewstate Mac Failed

However, I can see in the HTML souce that the __EVENTVALIDATION input has moved up to where the other .NET hidden inputs are. http://stackoverflow.com/questions/5840899/asp-net-validation-of-viewstate-mac-failed So, whenever you want to create cookie and want to make it secure here is the right technique. Validation Of Viewstate Mac Failed Error Solution asked 5 years ago viewed 55964 times active 8 months ago Blog Stack Overflow Podcast #93 - A Very Spolsky Halloween Special Linked 14 Setting ViewStateUserKey gives me a “Validation of Validation Of Viewstate Mac Failed Godaddy Thanks for the heads up.

The bottom line was that I was able to get .NET frameworks for 2.0, 3.0 and 3.5 that kept my page working by installing .NET 3.5 (NOTE: NO SERVICE PACK). any idea.. We haven't seen as many of those but it certainly can cause the same problem. or enable it?.. Validation Of Viewstate Mac Failed .net 4

But in our PRD servers. Reply Devashri Member 20 Points 14 Posts Re: Validation of viewstate MAC failed. configuration specifies the same validationK... I had the following in the tag:

I just removed the attribute "action" and everything works fine since. Source share|improve this answer edited Apr 18 at 9:41 Ɖiamond ǤeezeƦ 2,25331631 answered Apr 15 at 0:33 Sébastien 211 add a comment| up vote 0 down vote This error message is normally

more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Validation Of Viewstate Mac Failed Single Server AutoGenerate cannot be used in a cluster. You aren't using a web farm. 2.

I don't really understand this: int FormStart = html.IndexOf(">form"); int EndForm = html.IndexOf("<", FormStart) + 1; Surely FormStart will never be true, unless you mean to match "form"?

I have tried numerous other solutions to no avail. Right inverse of f(x)= x² that is not sqrt(x) or -sqrt(x) How to Fill Between two Curves Read past end of file to recover data more hot questions question feed default Then just call enableFormElements() and disableFormElements(). 3. Validation Of Viewstate Mac Failed Load Balancer The end result is that at the bottom of your rendered tag, you'll see something like this: .

Add to Want to watch this again later? How much more than my mortgage should I charge for rent? I found this by looking at the event information in Eventviewer/Application logs and the "Task Category" called "Web Event". http://opensofts.org/viewstate-mac/viewstate-mac-failed-error.php Basically when they selected a row in the grid i sent them to a details page of that row.

After I published a new version of my apps, I began receiving a lot of Validation of viewstate MAC failed error message. Each website in the same app pool should have a separate machine key otherwise this error will continue. Also EndForm would match inside the next tag (in my case a div), so you'd end up with "<div>" I changed the IndexOfs to match "" respectively and One of the preserved form fields on the calling page is the hidden __VIEWSTATE form field, which holds the view state for the page.

Small page with on two buttons, two text boxex, and dropdownlist. This is not "solving" or "fixing" the problem it is avoiding it. System.Web.HttpException: The state information is invalid for this page and might be corrupted. --> System.Web.UI.ViewStateException: Invalid viewstate User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SV1; SLCC1; .NET CLR 2.0.50727; .NET Instead of overriding Render: protected override void Render(HtmlTextWriter writer) I defined a method called RenderFormValidationEarly protected void RenderFormValidationEarly(HtmlTextWriter writer) Which I call from the pages that testing has shown suffer from

Treat my content as plain text, not as HTML Preview 0 … Existing Members Sign in to your account ...or Join us Download, Vote, Comment, Publish. As usual it appears to be quite random and I've never been able to reproduce it consistently. How I fixed the "Validation of viewstate MAC failed" error on Shared Hosting: I used the Generator Tool to generate a machine key I added the machineKey element to my Although there are several potential bugs in your code if the html is not well formed (for whatever reason).

Solution 3 Accept Solution Reject Solution In the AppPool -> Advanced settings of the web site, ensure that you didn't modify the Maximum Worker Process to a value bigger than 1. Hope this leads to the final answer to this. Rate this: Please Sign up or sign in to vote. Missing Schengen entrance stamp What's this I hear about First Edition Unix being restored?

I used Alex's approach, but made one small change. Admin Technomark 2,131 views 2:58 how to fix Invalid postback orcallback argument. Login would fail for these users. Client IP: Port: 61362 User-Agent: T-Mobile Dash Mozilla/4.0 (compatible; MSIE 4.01; Windows CE; Smartphone; 320x240) ViewState: /wEPDwUJMjUyNTI1NDMyD2QWAmYPZBYCAgEPZBYEAlAPD2QWAh4Kb25rZXlwcmVzcwUqcmV0dXJuIGNsaWNr QnV0dG9uKGV2ZW50LCdjdGwwMF9pYlNlYXJjaCcpZAJWD2QWBAIBD2QWBAIDDw9kFgIfAAUxcmV0dXJuIGNs aWNrQnV0dG9uKGV2ZW50LCdjdGwwMF9jcDFfRmxhc2hCdXR0b24nKWQCBg8UKwACDxYCHghJbWFnZVVybAUj fi9faG9tZV9hZF91bml0cy9ob21lX2FkdW5pdHMxMS5qcGdkDxQrAAMWCB4LQ29vcmRpbmF0ZXMFFzAsMCwy NTUsMCwyMjQsMTEwLDAsMTEwHgtOYXZpZ2F0ZVVybAUGfi9uZmwvHg1BbHRlcm5hdGVUZXh0BSNUaGUgcnVz aCB0byBGYXRoZWFkIGZvb3RiYWxsIGlzIG9uIR4GVGFyZ2V0ZRYIHwIFGzQ5OCwwLDQ1OCwxMTAsMjI0LDEx MCwyNTUsMB8DBRB+L2hlcm9lcy9iYXRtYW4vHwQFOVRoZSBEYXJrIEtuaWdodCBpcyBoZXJlLi4uYW5kIGhl J3MgYnJvdWdodCBzb21lIGZyaWVuZCdzIR8FZRYIHwIFGzcwOCwxMTAsNzM5LDAsNDk4LDAsNDU4LDExMB8D BQZ+L21sYi8fBAUhTUxCIGhpdHMgYSBob21lIHJ1biB3aXRoIEZhdGhlYWQhHwVlFCsBAwICAgICAmQCAw8P FgIeB1Zpc2libGVoZBYCAgEPZBYCZg8PZBYCHwAFMnJldHVybiBjbGlja0J1dHRvbihldmVudCwnY3RsMDBf Y3AxX1N0YXRpY0J1dHRvbicpZBgBBR5f...

can u suggest me another way to solve this ??? Was user-agent identification used for some scripting attack techique? any ideas?