Infopath Forms Services has detected a mismatch between users data in the browser and on the server.

[Eric van der Niet, RealData Systems B.V.]

Hello,

I have a huge problem I hope someone can help me with!??

I developed a Forms Services form that at this time is being used in the
firm I work for. Now for the problem: Sometimes my users get an error inside
the form that it cannot be downloaded and there is no way out of there and
the loose all of there data. In the logfile I can see the following message:

"Infopath Forms Services has detected a mismatch between the user's data in
the browser and on the server. This may indicate the
SESSION_STATE_PASCAL_CASED is not configured properly on a multible front
end farm or that a malicious user is trying to tamper with client data."

I have NO multible front end servers...

Can someone please give me some hints to help me find a resolution... Thank
you in advance..

With kind regards,
Eric van der Niet

 

[S.Y.M. Wong-A-Ton]

What are the settings for sessionState and machineKey in the web.config of
the web application of the site where the error took place?

 

[יבש]

What would one check for in those settings?

What are the settings for sessionState and machineKey in the web.config of
the web application of the site where the error took place?