I don't think the problem is related to addons, the installation of
IE7, proxies, Host files or the particular website being visited. It
is 100% reproducible on some machines like mine by simply toggling the
Phishing Filter on and off. Many users here have both the update and
Phishing Filter turned on and do not see the problem.

I was having the same issue even with the home page set to about:blank
and all addons disabled using the "Internet Explorer (No Addons)"
shortcut from the System Tools under Accessories. When I used the
"iexplore.exe -nohome -extoff" extensions, IE7 would open but as
soon as I went anywhere, even www.google.com, I'd get the dreaded
Navcancl message. Disabling Phishing Filter rectified all issues.
However, I have many users here who do not have the problem with the
931768 update installed and Phishing Filter enabled.

Temporary Solution...

1. Start IE7 using Start->Run iexplore.exe -nohome -extoff
2. Right click on the toolbar area and tick Menu Bar if its disabled
2. Tools->Options->Advanced->Security->Disable Phishing Filter

I tried with no luck a complete reinstall of IE7 followed by
reinstalling Microsoft Update 91768 but the update broke it again.
There is heaps of stuff on this development machine so pinpointing the
exact cause will be difficult. Lots of people have the issue so I'm
sure Microsoft will work it out eventually. In the mean time, I can
live without Phishing protection.


On May 10, 10:57 am, "PA Bear" <PABear...******.com> wrote:
> UPDATE: See if this webpage of MVP Mike Burgess' addresses the problem:http://mvps.org/winhelp2002/hostsfaq.htm#message
> --
> ~PA Bear
>
>
>
> PA Bear wrote:
> > See 'Known issues with this security update > Controls that prompt before
> > they are loaded' section ofhttp://support.microsoft.com/kb/931768
>
> > 1. Try opening IE in No Add-ons mode & see if this behavior persists. If
> > it
> > doesn't, change your IE home page to "blank" then close IE7 and reopen
> > normally (i.e., with all Add-ons enabled) and see if the behavior returns.
>
> > 2. If still no joy, reopen in No Add-ons mode, reset IE settings
> > (http://support.microsoft.com/kb/923737), close IE, open normally and see
> > if
> > the behavior still persists.
>
> > This is all related to a cross-site security vulnerability addressed by
> > MS07-027/KB931768:http://secunia.com/advisories/24535/
>
> > Also try this fix, courtesy of MVP Robert Aldwinckle:
>
> > Start > Run > Type or copy/paste the following into the box:
>
> > iexplore.exe -nohome -extoff
>
> > [Note the spaces in the line above!]
>
> > andy mackie wrote:
> >> After installing the latest windows updates today, IE7 now dies when
> >> trying
> >> to start, giving a security warning aboutnavcanclfrom ieframe.dll.
>
> >> I've saw a couple of other posts suggest it's KB931768 that's causing the
> >> problem.
>
> >> Doing a system restore to before this update got things working for me.
> >> Any
> >> idea as to what the problem is ?
>
> >> Thanks,
> >> Andy Mackie- Hide quoted text -
>
> - Show quoted text -