Cannot open chm files

[Will Waller]

Whenever I try and open a help file I get an error dialog
with a message like the following:

Cannot open the file:


XP will not allow me to install hhupd.exe. How can I
reinstall the help system, or correct the current
installation?

[David.]

"Will Waller" > wrote in message >...
> Whenever I try and open a help file I get an error dialog
> with a message like the following:
>
> Cannot open the file:
>
>
> XP will not allow me to install hhupd.exe. How can I
> reinstall the help system, or correct the current
> installation?

Go "start" "run": regsvr32 "c:\windows\system32\hhctrl.ocx".

The problem was the same for me...

David.

[Pete Lees]

Will,

> Whenever I try and open a help file I get an error dialog
> with a message like the following:
>
> Cannot open the file:
>
>
> XP will not allow me to install hhupd.exe. How can I
> reinstall the help system, or correct the current
> installation?

Here are some things to try:

1) Upgrade the components used to view HTML Help files by applying
Microsoft Critical Update 811630.

http://support.microsoft.com/?kbid=811630

2) Use MJ's Help Diagnostics to check that the help components are
properly installed and registered on your machine.

http://helpware.net/downloads/index.htm#MJs

3) Delete the file hh.dat, which you should find in this directory:

\Documents and Settings\%username%\Application Data\Microsoft\HTML Help

This is a database file that saves such session information as the
window position and favorites for the HTML Help viewer. If the file
has been corrupted then .chm files may behave erratically. Windows
will automatically re-create the file when you next open any .chm
file.

4) Empty your Temporary Internet Files directory.

--
Pete (Microsoft Help MVP)