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System Web Httpexception Unable To Validate Data

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If you choose to participate, the online survey will be presented to you when you leave the Technet Web site.Would you like to participate? share|improve this answer edited Sep 26 '08 at 17:07 answered Sep 26 '08 at 16:21 Chris Van Opstal 22.3k65281 1 Thanks, especially for the MS article. –wprl Sep 26 '08 Mar 20, 2007 11:56 AM|dev29|LINK I am also having exact same problem! Error Source: System.Web Error Target Site: Byte[] GetDecodedData(Byte[], Byte[], Int32, Int32, Int32 ByRef) Post Data VIEWSTATE: /wEPDwULLTE4NTUyODcyMTFkZF96FHxDUAHIY3NOAMRJYZ+CKsnB EVENTVALIDATION: /wEWBAK+8ZzHAgKOhZRcApDF79ECAoLch4YMeQ2ayv/Gi76znHooiRyBFrWtwyg= Exception Stack Trace at System.Web.UI.ViewStateException.ThrowError(Exception inner, String persistedState, String errorPageMessage, Boolean macValidationError) Source

Get the weekly newsletter! Initially we disabled the ViewStateMac property (enableViewStateMac="false" in the page directive) to solve it, but this is not a true solution to the problem and can threaten data integrity. Your comments are welcome. 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 http://stackoverflow.com/questions/802921/what-does-an-unable-to-validate-data-exception-in-system-web-configuration-mac

Unable To Validate Data Encryptordecryptdata

Member 4 Points 23 Posts Re: System.Web.HttpException: Unable to validate data. Output integers in negative order, increase the maximum integer everytime Let's speed that file sentence searching program A for loop that appears to be practically infinite How can I keep the Not the answer you're looking for?

Reply lflewwelling Member 10 Points 6 Posts Re: System.Web.HttpException: Unable to validate data. asp.net visual-studio-2010 iis share|improve this question edited Jan 25 '12 at 21:00 Michiel van Oosterhout 17.6k1269111 asked Jan 25 '12 at 20:52 Tony_Henrich 12.1k45155277 add a comment| 3 Answers 3 active I get the error on a "pure" postback, meaning the user does not click the stop / back / next buttons.I've trimmed the viewstate by disabling the viewstate for controls that Machinekey Generator Have any problem?

That was fixed by adding compatibilityMode="Framework20SP2" as an argument for machineKey node in web.config in newer application. Unable To Validate Data Machinekey What caused the problem in my case? Mar 12, 2010 01:13 PM|Dude-man|LINK I believe I fixed this problem by adding EnableViewStateMAC="False" to the page directive. useful source I don't think the solution is in removing the key but in being the same in all web.config share|improve this answer answered Jan 14 '14 at 14:49 Jeanseb 205 add a

and if so... This Implementation Is Not Part Of The Windows Platform Fips Validated Cryptographic Algorithms. Regards, -- Bojan Jovicic [email protected] www.bojanjovicic.com Reply e_screw Star 9619 Points 3854 Posts Re: System.Web.HttpException: Unable to validate data. Let me know if you want anything more on this topic to enhance. I didn't notice a problem on my site when this happened.

Unable To Validate Data Machinekey

Sign In Join Search IIS Home Downloads Learn Reference Solutions Technologies .NET Framework ASP.NET PHP Media Windows Server SQL Server Web App Gallery Microsoft Azure Tools Visual Studio Expression Studio Windows http://www.codeproject.com/Articles/43637/Weird-Error-Unable-to-Validate-Data-in-ASP-NET-web Jan 13, 2007 06:11 PM|bojan.jovicic|LINK Here is the ASP.NET code for GridView used in this page:

If the Ch’in dynasty was so short-lived, why was China named for it? this contact form http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpgenref/html/gngrfpagessection.asp 0 LVL 1 Overall: Level 1 Message Author Comment by:bonfire89 ID: 133593192005-02-20 fantastic... You could also acheive the same by disabling the enableViewStateMac. Does anybody know which plant (or tree) is this? Asp Net Membership Getpassword Unable To Validate Data

Solution The solution is simple. thanks sili Reply bojan.jovici... Any help is much appreciated. have a peek here I've searched around but can't find the cause.

Drop him a mail to [email protected] His BlogDotnet Tricks and TipsDont forget to vote or share your comments about his Writing You may also be interested in... My observations: After reading your article, I tried going to other screens of my web-application by typing the url directly. share|improve this answer answered Apr 2 '09 at 21:07 MattK311 507215 add a comment| up vote 1 down vote Not sure if this would help anyone, but my solution was the

Help, my office wants infinite branch merges as policy; what other options do we have?

No symbols have been loaded for this document in a Silverlight application17VS2010 error: Unable to start debugging on the web server93Unable to start debugging on the web server. Privacy Policy Support Terms of Use Primary Navigation Channel 9 Home Site Navigation All Content Shows Events Forums Toggle Search Search Channel 9 Search Sign In Tech Off Thread 2 posts AutoGenerate cannot be used in a cluster. 2) Viewstate can only be posted back to the same page. 3) The viewstate for this page might be corrupted.] System.Web.UI.LosFormatter.Deserialize(String input) +118 System.Web.UI.Page.LoadPageStateFromPersistenceMedium() at System.Security.Cryptography.RijndaelManagedTransform.DecryptData(Byte[] inputBuffer, Int32 inputOffset, Int32 inputCount, Byte[]& outputBuffer, Int32 outputOffset, PaddingMode paddingMode, Boolean fLast) at System.Security.Cryptography.RijndaelManagedTransform.TransformFinalBlock(Byte[] inputBuffer, Int32 inputOffset, Int32 inputCount) at System.Security.Cryptography.CryptoStream.FlushFinalBlock() at System.Web.Configuration.MachineKeySection.EncryptOrDecryptData(Boolean fEncrypt, Byte[] buf, Byte[] modifier,

Basically it uses the key mentioned in the Machine.config to encrypt the viewstate data. Wherever the ViewState variable is not populated, those screens rendered perfectly as designed. So it thought the cookie was for the NEW site, but it wasn't. Check This Out I had to do something similar with people making requests for large files and then canceling them.

Cloud Services Concerto Cloud Services Advertise Here 669 members asked questions and received personalized solutions in the past 7 days. The default value for it is ... http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpgenref/html/gngrfmachinekeysection.asp Make sure to follow minimum key length Member 255 Points 151 Posts Re: System.Web.HttpException: Unable to validate data. Solution Fix the key in your web.config file, so that only one key is used to encrypt and decrypt the viewstate data.

Booya! Do progress reports/logging information belong on stderr or stdout? This page is working with no problems for 95% of time. I know that this attribute is supposed to be inherited, but it appears that this was not always the case.

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