Event ID 1309, Source ASP.NET 2.0.50727.0

Question

I had recently changed the Active Directory Service Account and this error suddenly started showing up. The big issue is the web server has slowed so significantly it is almost unusable. Here is one example of the code created Event code: 3005 Event message: An unhandled exception has occurred. Event time: 2/25/2021 8:48:06 AM Event time (UTC): 2/25/2021 1:48:06 PM Event ID: d02726b130bb41c4abd3c4780b9cb263 Event sequence: 4815 Event occurrence: 12 Event detail code: 0 Application information: Application domain: /LM/W3SVC/2/ROOT-1-132587212040592800 Trust level: Full Application Virtual Path: / Application Path: I:\WEBSITES\VIOS-EAST\ Machine name: RADFC2A11V008VI Process information: Process ID: 2188 Process name: w3wp.exe Account name: IIS APPPOOL\VIOS-EAST Exception information: Exception type: ArgumentException Exception message: Invalid postback or callback argument. Event validation is enabled using in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. Request information: Request URL: https://vios-east.army.mil:443/3903/3903form.aspx Request path: /3903/3903form.aspx User host address: 172.17.3.42 User: Is authenticated: False Authentication Type: Thread account name: NAE\svc.radf.a.vi.iis2 Thread information: Thread ID: 21 Thread account name: NAE\svc.radf.a.vi.iis2 Is impersonating: False Stack trace: at System.Web.UI.ClientScriptManager.ValidateEvent(String uniqueId, String argument) at System.Web.UI.WebControls.TextBox.LoadPostData(String postDataKey, NameValueCollection postCollection) at System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) Now, Please the code worked perfectly before the service account change.