Invalid ViewState Exception in Telerik Pages

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AjaxLoadingPanel Grid Scheduler
Nallan Krishnan
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Nallan Krishnan asked on 07 Jul 2023, 06:03 AM | edited on 07 Jul 2023, 06:07 AM

Hi,

We are using Telerik ASP .NET AJAX Control version 2020.1.114.45 in our product.

Sometimes, when the users are using our application with telerik controls, they get invalid viewstate exception as below. It happens randomly. Please let me know, if it is a known issue and fix is available for this issue.

We are using Chrome Browser Version 114.0.5735.199.

Invalid viewstate. 
Client IP: <ClientIP>
Port: 48492
Referer: <WebURL>/frmAPPOINTMENTS.aspx
Path: /frmAPPOINTMENTS.aspx
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36
ViewState: 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...

Thanks.

Nallan Krishnan
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commented on 17 Jul 2023, 01:46 AM

Hi,

Please give us an update on this ticket. Please let us know, if it is a known issue and fix is available for this issue.

Rumen
Telerik team
commented on 19 Jul 2023, 10:11 AM

Hi Nillan,

I am not aware of any ViewState related problems in version 2020.1.114. 

I decoded the provided ViewState fragment and there is no info for anything Telerik-related:

Do you get the error if you comment out or remove the Telerik controls from the frmAPPOINTMENTS.aspx page?

Some more tips:

  • Upgrade to the latest version of the Telerik control and test again.
  • Check for any custom code that interacts with the Telerik controls, especially related to ViewState handling. Ensure that the code is not causing unintended modifications to the ViewState.
  • If you have access to error logs or exception details, investigate the specific error message and stack trace to identify the root cause of the issue.

 

Nallan Krishnan
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commented on 17 Aug 2023, 10:28 AM

Hi,

Please let me know, if upgrading the latest version of telerik requires any purchasing the new license.

Rumen
Telerik team
commented on 23 Aug 2023, 10:04 AM

Yes, the renewal is paid. Please check this page for moire information: https://www.telerik.com/purchase/license-renewals

No answers yet. Maybe you can help?

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