Get below error when hosting ASP.NET application in IIS

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C#

The state information is invalid for this page and might be corrupted. 
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: The state information is invalid for this page and might be corrupted.

Source Error: 


[No relevant source lines]
 

Source File: c:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\f4f89c16\5236afcd\App_Web_s1zzmga4.0.cs    Line: 0 

Stack Trace: 


[FormatException: The input is not a valid Base-64 string as it contains a non-base 64 character, more than two padding characters, or a non-white space character among the padding characters. ]
   System.Convert.FromBase64String(String s) +0
   System.Web.UI.ObjectStateFormatter.Deserialize(String inputString) +77
   System.Web.UI.ObjectStateFormatter.System.Web.UI.IStateFormatter.Deserialize(String serializedState) +4
   System.Web.UI.Util.DeserializeWithAssert(IStateFormatter formatter, String serializedState) +37
   System.Web.UI.HiddenFieldPageStatePersister.Load() +147

[ViewStateException: Invalid viewstate. 
	Client IP: 10.12.0.12
	Port: 61684
	Referer: http://npidev.fender.com:91/ProjectDetail.aspx?id=1
	Path: /ProjectDetail.aspx
	User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.0; Trident/5.0)
	ViewState: 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...]

[HttpException (0x80004005): The state information is invalid for this page and might be corrupted.]
   System.Web.UI.ViewStateException.ThrowError(Exception inner, String persistedState, String errorPageMessage, Boolean macValidationError) +235
   System.Web.UI.ViewStateException.ThrowViewStateError(Exception inner, String persistedState) +14
   System.Web.UI.HiddenFieldPageStatePersister.Load() +251
   System.Web.UI.Page.LoadPageStateFromPersistenceMedium() +106
   System.Web.UI.Page.LoadAllState() +43
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +8431
   System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +253
   System.Web.UI.Page.ProcessRequest() +78
   System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context) +21
   System.Web.UI.Page.ProcessRequest(HttpContext context) +49
   ASP.projectdetail_aspx.ProcessRequest(HttpContext context) in c:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\f4f89c16\5236afcd\App_Web_s1zzmga4.0.cs:0
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +100
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75

 


--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.272

What I have tried:

I tried below links
http://renditionprotocol.blogspot.in/2007/01/state-information-is-invalid-for-this.html
http://forums.asp.net/t/998293.aspx?System+Web+HttpException+The+state+information+is+invalid+for+this+page+and+might+be+corrupted
not getting solution any one please give solution.

Posted 10-May-16 18:47pm

Member 12172426

Updated 10-May-16 19:13pm

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koolprasad2003 · Answer 1 · 2016-05-10T19:13:00

I guess This is view state issue.
There are couple of work around see if it woprks
1. set enableEventValidation for the page to 'false'
2. One possible reason for “The state information is invalid for this page…” [^]
3. Try turning ViewState off
4.Just override the viewstate and save it as session

C#

protected override object LoadPageStateFromPersistenceMedium()
{
return Session["_ViewState"];
}
protected override void SavePageStateToPersistenceMedium(object viewState)
{
Session["_ViewState"] = viewState;
}

</script>
<form runat="server">
<input type=hidden name=__VIEWSTATE>
</form>