Hi John
It appears there are several things that can cause this kind of problem.
Here are a few suggestions that have worked for others with this problem
that you might try and see if they will help:
Back Button - "Page has expired" error when using back button
http://inetexplorer.mvps.org/answers_10.htm#back
Error Message: Warning: Page Has Expired: The Page You Requested..
http://support.microsoft.com/default.aspx?scid=KB;EN-US;q183763
and.......
When you are using IE to view various Web sites, the Back and Forward
buttons on the tool bar may become unavailable.
http://support.microsoft.com/default.aspx?scid=KB;EN-US;q229684 (Jul. 20,
2001)
Cannot Navigate Back to Previous Web Page
Here's a bit of information that explains what can happen to cause this.
Back - Return to the page you just left
http://www.internet4classrooms.com/netscape_buttons.htm
or
http://www.soundfeelings.com/free/back.htm
also....
Internet Browsing
http://www.santarosa.k12.fl.us/parents/TechTips.htm
Grayed out Buttons and Menu Items that Don't Work:
It is a convention in many Windows programs and in the popular browsers to
"gray out" items that currently aren't applicable. So, if you think your
BACK button isn't working, it may be because in that particular instance it
isn't applicable. For example, if you just opened your browser and this was
the first page you viewed, then there isn't a page to go back to, so the
BACK button is grayed out.
Is it only a few sites, or all of them? Is the site or page opening in a
new window? Opening in a new widow can disable the Back button. In all
dominant browsers, webmasters using the <a target="_blank"> tag to force a
link to open in a new window breaks the Back button. The new window does
not retain the browser history of the previous window, so the "Back" button
is disabled. It does sound as it this might be what is happening on these
sites.
Try using the Refresh button and see if that lets you go back.
If these steps do not resolve your problem, please post back to this thread
with the details and any error messages.
Hope this helps
Jan
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