Actually when another user asked that question and I looked into it, I
thought this KB article was pretty worthless. You'll end up having to
pay Microsoft to get the "help" in removing the password. Microsoft
"protects" this password only by trying to keep its location hidden.
Although its value is encrypted, it sits in the clear in the registry as
its own separate data value. Microsoft really screwed up in not making
this a secure password. If it were a truly secured password, I wouldn't
tell you how to undo it. The skinny of the following article is to go
in the registry to find:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Ra
tings
Data value named "Key".
Delete it.
From
http://www.pchell.com:
How to Remove Content Advisor Password in Internet Explorer
The following steps will remove any password set in the Internet
Explorer Content Advisor and allow you to reset the program to its
original state.
1) Click on Start and choose Run.
2) Type in RegEdit and select OK.
3) Now click on the little plus sign to the left of HKEY_LOCAL_MACHINE.
4) Continue to drill down, always clicking on the plus sign at the left
of the named key, through Software, Microsoft, Windows, Current Version
and Policies.
5) Now click on the Ratings folder.
6) In the right pane of the RegEdit window, you'll see an icon called
Key. Click on it and press Delete.
7) Next, choose Registry and then Exit to exit RegEdit. You've just
deleted your original Content Advisor password.
8) Restart the computer and run Internet Explorer again.
9) Choose View and then Internet Options (or Options for version 3.x).
For IE 5 or greater, Click on Tools, Internet Options.
10) Click on the Content tab and click on Disable. When asked for a
password, don't enter anything; just click on OK. This will disable
Content Advisor because there's no longer a password.