Unable to validate data!!!

Discussion in 'ASP .Net' started by .::wireless::., Nov 4, 2004.

  1. Hi all,

    Does anybody know what could be the reason of the following error?

    Thanks.

    Server Error in '/' Application.
    --------------------------------------------------------------------------------

    Unable to validate data.
    Description: An unhandled exception occurred during the execution of the
    current web request. Please review the stack trace for more information
    about the error and where it originated in the code.

    Exception Details: System.Web.HttpException: Unable to validate data.

    Source Error:

    An unhandled exception was generated during the execution of the
    current web request. Information regarding the origin and location of the
    exception can be identified using the exception stack trace below.

    Stack Trace:

    [HttpException (0x80004005): Unable to validate data.]
    System.Web.Configuration.MachineKey.GetDecodedData(Byte[] buf, Byte[]
    modifier, Int32 start, Int32 length, Int32& dataLength) +196
    System.Web.UI.LosFormatter.Deserialize(String input) +60

    [HttpException (0x80004005): Authentication of viewstate failed. 1) If this
    is a cluster, edit <machineKey> configuration so all servers use the same
    validationKey and validation algorithm. 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() +102

    [HttpException (0x80004005): Invalid_Viewstate
    Client IP: 85.96.12.54
    Port: 1916
    User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
    ViewState:
    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
    Http-Referer: http://dev.sidenet.net/trust/satisform.aspx
    Path: /trust/satisform.aspx.]
    System.Web.UI.Page.LoadPageStateFromPersistenceMedium() +448
    System.Web.UI.Page.LoadPageViewState() +18
    System.Web.UI.Page.ProcessRequestMain() +447



    --------------------------------------------------------------------------------
    Version Information: Microsoft .NET Framework Version:1.1.4322.2032; ASP.NET
    Version:1.1.4322.2032
     
    .::wireless::., Nov 4, 2004
    #1
    1. Advertising

  2. Here are three potential reasons:

    1) If this is a cluster, edit <machineKey> configuration so all servers
    use the same validationKey and validation algorithm. 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.


    Is your site serving from a Web farm? Are you dynamically adding
    controls or mucking with the __VIEWSTATE hidden form field in any way?


    ..::wireless::. wrote:
    > Hi all,
    >
    > Does anybody know what could be the reason of the following error?
    >
    > Thanks.
    >
    > Server Error in '/' Application.
    > --------------------------------------------------------------------------------
    >
    > Unable to validate data.
    > Description: An unhandled exception occurred during the execution of the
    > current web request. Please review the stack trace for more information
    > about the error and where it originated in the code.
    >
    > Exception Details: System.Web.HttpException: Unable to validate data.
    >
    > Source Error:
    >
    > An unhandled exception was generated during the execution of the
    > current web request. Information regarding the origin and location of the
    > exception can be identified using the exception stack trace below.
    >
    > Stack Trace:
    >
    > [HttpException (0x80004005): Unable to validate data.]
    > System.Web.Configuration.MachineKey.GetDecodedData(Byte[] buf, Byte[]
    > modifier, Int32 start, Int32 length, Int32& dataLength) +196
    > System.Web.UI.LosFormatter.Deserialize(String input) +60
    >
    > [HttpException (0x80004005): Authentication of viewstate failed. 1) If this
    > is a cluster, edit <machineKey> configuration so all servers use the same
    > validationKey and validation algorithm. 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() +102
    >
    > [HttpException (0x80004005): Invalid_Viewstate
    > Client IP: 85.96.12.54
    > Port: 1916
    > User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
    > ViewState:
    > dDw2MTUzOTgyODI7dDw7bDxpPDE+Oz47bDx0PDtsPGk8Mz47aTw3PjtpPDk+O2k8MTE+O2k8MTU+O2k8MTk+O2k8MjM+O2k8Mjc+O2k8MzU+O2k8Mzc+O2k8Mzk+O2k8NDc+O2k8NDk+O2k8NTE+O2k8NjE+Oz47bDx0PHA8cDxsPFRleHQ7PjtsPDIwMDQxMTQyMDE2NDU4NTs+Pjs+Ozs+O3Q8cDxwPGw8VGV4dDs+O2w8QURBTkE7Pj47Pjs7Pjt0PHA8cDxsPFRleHQ7PjtsPEhhc2FuIMSwTkNFU1U7Pj47Pjs7Pjt0PHA8cDxsPEVuYWJsZWQ7PjtsPG88dD47Pj47Pjs7Pjt0PHA8cDxsPEVuYWJsZWQ7PjtsPG88dD47Pj47Pjs7Pjt0PHA8cDxsPEVuYWJsZWQ7PjtsPG88dD47Pj47Pjs7Pjt0PHA8cDxsPEVuYWJsZWQ7PjtsPG88dD47Pj47Pjs7Pjt0PHA8cDxsPEVuYWJsZWQ7PjtsPG88dD47Pj47Pjs7Pjt0PHA8cDxsPEVuYWJsZWQ7PjtsPG88dD47Pj47Pjs7Pjt0PHA8cDxsPEVuYWJsZWQ7PjtsPG88dD47Pj47Pjs7Pjt0PHQ8O3Q8aTw2PjtAPEFST01BTEk7Tk9STUFMO1DDnFTDnFJMw5w7UkVOS0zEsDtTLsOWTETDnFLDnEPDnEzDnDtTw5xQRVIgxLBOQ0U7PjtAPDM7NDs1OzY7Nzs4Oz4+Oz47Oz47dDxwPHA8bDxFbmFibGVkOz47bDxvPHQ+Oz4+Oz47Oz47dDxwPHA8bDxFbmFibGVkOz47bDxvPHQ+Oz4+Oz47Oz47dDx0PDt0PGk8MD47QDw+O0A8Pj47Pjs7Pjt0PHQ8O3Q8aTwzPjtAPGVtaW4gaXRyaXlhdCBkZXBvc3Ugeml5YXJldCBub2t0YXPEsW5kYSBhc2xhbiDDtnphc2xhbiBpbGUgZ8O2csO8xZ/

    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
    Z/EsWzEscSfxLFuZGEgdG9wbGFtIDM2IGFkZXQgw7xyw7xuIHNpcGFyacWfaSBhbMSxbmTEsS47Pj47Pjs7Pjs+Pjs+Pjs+jLMi9JBCkgpee5ZEW3ouNbAsvv4=
    > Http-Referer: http://dev.sidenet.net/trust/satisform.aspx
    > Path: /trust/satisform.aspx.]
    > System.Web.UI.Page.LoadPageStateFromPersistenceMedium() +448
    > System.Web.UI.Page.LoadPageViewState() +18
    > System.Web.UI.Page.ProcessRequestMain() +447
    >
    >
    >
    > --------------------------------------------------------------------------------
    > Version Information: Microsoft .NET Framework Version:1.1.4322.2032; ASP.NET
    > Version:1.1.4322.2032
    >
    >



    --

    Scott Mitchell

    http://www.4GuysFromRolla.com

    * When you think ASP.NET, think 4GuysFromRolla.com!
     
    Scott Mitchell [MVP], Nov 4, 2004
    #2
    1. Advertising

  3. No, our site is serving from a single web server. And I am not adding
    controls dynamically.

    However I didn't understand what does "mucking with the __VIEWSTATE hidden
    form field in any way" mean?

    The page contains some textboxes and a button. While pressed to the button,
    the content of the textboxes is received and added into a listbox.

    This process continues until user doesnt want to add anymore into the
    listbox. After adding all required data, with another button press, the
    content of the listbox

    is sent to the user via email.

    The "unable to validate data" error occurs while adding the contents of the
    textboxes into listbox after repeating this adding operation three or four
    times.

    Is this information enough to help me to solve this problem?

    Thank you very much for your interests.



    "Scott Mitchell [MVP]" <> wrote in message
    news:ygtid.38515$...
    > Here are three potential reasons:
    >
    > 1) If this is a cluster, edit <machineKey> configuration so all servers
    > use the same validationKey and validation algorithm. 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.
    >
    >
    > Is your site serving from a Web farm? Are you dynamically adding controls
    > or mucking with the __VIEWSTATE hidden form field in any way?
    >
    >
    > .::wireless::. wrote:
    >> Hi all,
    >>
    >> Does anybody know what could be the reason of the following error?
    >>
    >> Thanks.
    >>
    >> Server Error in '/' Application.
    >> --------------------------------------------------------------------------------
    >>
    >> Unable to validate data.
    >> Description: An unhandled exception occurred during the execution of the
    >> current web request. Please review the stack trace for more information
    >> about the error and where it originated in the code.
    >>
    >> Exception Details: System.Web.HttpException: Unable to validate data.
    >>
    >> Source Error:
    >>
    >> An unhandled exception was generated during the execution of the
    >> current web request. Information regarding the origin and location of the
    >> exception can be identified using the exception stack trace below.
    >>
    >> Stack Trace:
    >>
    >> [HttpException (0x80004005): Unable to validate data.]
    >> System.Web.Configuration.MachineKey.GetDecodedData(Byte[] buf, Byte[]
    >> modifier, Int32 start, Int32 length, Int32& dataLength) +196
    >> System.Web.UI.LosFormatter.Deserialize(String input) +60
    >>
    >> [HttpException (0x80004005): Authentication of viewstate failed. 1) If
    >> this is a cluster, edit <machineKey> configuration so all servers use the
    >> same validationKey and validation algorithm. 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() +102
    >>
    >> [HttpException (0x80004005): Invalid_Viewstate
    >> Client IP: 85.96.12.54
    >> Port: 1916
    >> User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
    >> ViewState:
    >> 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

    > 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
    > Z/EsWzEscSfxLFuZGEgdG9wbGFtIDM2IGFkZXQgw7xyw7xuIHNpcGFyacWfaSBhbMSxbmTEsS47Pj47Pjs7Pjs+Pjs+Pjs+jLMi9JBCkgpee5ZEW3ouNbAsvv4=
    >> Http-Referer: http://dev.sidenet.net/trust/satisform.aspx
    >> Path: /trust/satisform.aspx.]
    >> System.Web.UI.Page.LoadPageStateFromPersistenceMedium() +448
    >> System.Web.UI.Page.LoadPageViewState() +18
    >> System.Web.UI.Page.ProcessRequestMain() +447
    >>
    >>
    >>
    >> --------------------------------------------------------------------------------
    >> Version Information: Microsoft .NET Framework Version:1.1.4322.2032;
    >> ASP.NET Version:1.1.4322.2032

    >
    >
    > --
    >
    > Scott Mitchell
    >
    > http://www.4GuysFromRolla.com
    >
    > * When you think ASP.NET, think 4GuysFromRolla.com!
     
    .::wireless::., Nov 5, 2004
    #3
  4. .::wireless::.

    claudineduplessis

    Joined:
    Nov 14, 2006
    Messages:
    7
    Hi,

    I don't want to sound stupid, but I don't know a lot about servers. How can I change the machine key value on the server?

    I am experiencing the same error. I have developed an ASP.NET web appication for a company and only ONE pc in the company is experiencing that error (also sporadically). I have never come accross this error from my local pc. I also haven't edited any machine keys (I don't even know what that is) so why would only one PC have that problem? I am also not using Server.Transfer, I am using Response.Redirect. I cannot disable the ViewState because this would cause my application not to work. This is becoming very urgent for me to solve.

    Can anyone please give me (easy to understand) advice on what I should do? Should I do something specific on the problem PC?

    Thanks a lot!
     
    claudineduplessis, Nov 15, 2006
    #4
  5. .::wireless::.

    claudineduplessis

    Joined:
    Nov 14, 2006
    Messages:
    7
    Solution!

    I have found a solution that works for me! I have added the page directive EnableViewStateMac="False" and haven't had a complaint since. Apparantly, this should be set to false by default according to Microsoft, but sometimes isn't.

    This is the site that gave me the solution and explanation:
    http://www.dotnetbips.com/articles/displayarticle.aspx?id=183
     
    claudineduplessis, Nov 16, 2006
    #5
    1. Advertising

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    Axel Dahmen
    Jan 5, 2005
  5. unable to validate data.

    , Jan 5, 2005, in forum: ASP .Net
    Replies:
    0
    Views:
    363
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