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Kentico Legend

Brenden Kehren - 1/14/2011 7:53:07 AM

Invalid ViewState on BizForm

I continue to receive this error on our contact us page which has a biz form on it and have no idea on how to fix it. It generates between 20-50 error emails per day for me. Could this be because a bot is trying to submit the form? If so, is there a CAPTCHA webpart that can be placed on a page?

EventType: E

EventTime: 1/13/2011 3:30:01 PM

Source: Application_Error

EventCode: EXCEPTION

UserID: 65

UserName: public

IPAddress: 79.142.68.99

NodeID: 236

DocumentName: Contact Us

EventDescription: Message: Invalid viewstate.
Client IP: 79.142.68.99
Port: 58136
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)
ViewState: 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...
Stack Trace:

Site: XXX

EventUrl: /Contact-Us.aspx

EventMachineName: XXX-IIS

EventUserAgent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)

EventUrlReferrer: http://www.xxxx.org/Contact-Us.aspx


Kentico MVP	bmckeiver-bizstream - 1/14/2011 2:39:57 PM RE:Invalid ViewState on BizForm We also receive the same error. I chalked it up to a spammer / bot as well, but it would be nice to know.

Kentico Developer

kentico_helenag - 1/17/2011 8:44:26 AM

RE:Invalid ViewState on BizForm

Hello,

Does it happen always or time to time?

It could happen if somebody do a postback before the whole viewstate of page is loaded, e.g. if viewstate is too long and/or the connection is slow and user submit some button before the page is completely loaded. Unfortunately, this is behavior of .NET platform, it is not caused by CMS.

Other possibile solution: http://community.discountasp.net/showthread.php?t=2719

Best regards,
Helena Grulichova


Kentico MVP	bmckeiver-bizstream - 1/17/2011 12:22:25 PM RE:Invalid ViewState on BizForm It doesn't happen every time, but it does seem to happen around 10 times a day on some sites. I'll check your your link and reply back when I get a chance to dig deeper