Our product has used OLI interface with IWebBrowser but crashes since OLE Zero Day Patch (Nov 12)

It crashes when we call the Navigate method (see below). This has worked for many years in all previous windows environmnets but is crashing on windows 7 since OLE Zero Day Patch (Nov 12).
(IDispatch(GetOleObject) as IWebBrowser2).Navigate(URL, EmptyParam, EmptyParam, EmptyParam, EmptyParam)
What can we do to rectify this problem.
Thanks
Jim Clark
jim@m&&&&.com.au
61 03 9&&& 0086

Hello Jim Clark,
Please temporarily uninstall the Update and check if this issue still exists.
For the methods not work and how to debug it, please consider seek help at the developer forum for more professional help.
Thank you for your understanding.
Best regards,
Fangzhou CHEN
Fangzhou CHEN
TechNet Community Support

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i will try to explain how i do this :
step 1 )
fallow this guide http://www.cit.cornell.edu/computer/system/win2000/kerberos/
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