When trying to use MS Office applications or a web browser, why do I get the following error: "Com returned an unexpected error code:Details are HOOKERR_NONOTIFYWINDOW"?

Follow the steps below to resolve this issue:

Verify your version of Adobe Reader. Help> About Adobe Reader X. Is it Adobe Reader X (10.0.0)?
If 10.0.0., then try updating Adobe Reader to version 10.0.1, or the latest. Help> Check for Updates. As always, restart your PC after applying updates.
If you already have Adobe Reader 10.0.1, or the above did not remedy the Dragon error message, you can try disabling Adobe Reader X’s Protected Mode (Edit > Preferences > General and deselecting Enable Protected Mode at startup).
If the above fails to eliminate the Dragon error, completely remove Adobe Reader X (via the control panel), restart your PC, and install Adobe Reader 9.
If the above does not provide a resolution to the Dragon error, remove Adobe Reader 9 via the control panel, and try another PDF reader such as Nuance’s free PDF reader.

Note: This may not be the only reason this error occurs.

Verification Source: Tested in house

When trying to use MS Office applications or a web browser, why do I get the following error: “Com returned an unexpected error code:Details are HOOKERR_NONOTIFYWINDOW”?