Add/remove programs listbox.htc not registered

J

JackRnl

While opening 'Add / remove software' I don't see the list of programs
instelled but a messagebox instead, containing:

************
Title: Add/remove programs
An unexpected error occurred.
Class not registered
res://appwiz.cpl/listbox.htc
line:225
*************

Obviously the registry has been damaged. How can I repair this?

PS I'll post a SECOND message in this thread containing screendumps
 
T

Torgeir Bakken (MVP)

JackRnl said:
While opening 'Add / remove software' I don't see the list of programs
instelled but a messagebox instead, containing:

************
Title: Add/remove programs
An unexpected error occurred.
Class not registered
res://appwiz.cpl/listbox.htc
line:225
*************

Obviously the registry has been damaged. How can I repair this?

Hi

From the "Run" box try

regsvr32 %windir%\system32\appwiz.cpl

and
regsvr32 %windir%\system32\webvw.dll

and
regsvr32 %windir%\system32\mshtml.dll


If this doesn't help, in the German newsgroup, one person fixed the
same type of error by reinstalling IE
http://groups.google.com/[email protected]

and

Add/Remove Programs Tool Displays Installed Programs Incorrectly
http://support.microsoft.com/default.aspx?scid=KB;EN-US;266668

The article above also tells you how to repair Internet Explorer 6.0


See tip 6032 at http://www.jsiinc.com/reghack.htm as well

If this doesn't help, try to reinstall the OS service pack you already have
installed (or install a newer one if possible).


If the problem persists, you'll could do an in-place upgrade of the OS and see
if it helps:

How to Perform an In-Place Upgrade of Windows 2000
http://support.microsoft.com/default.aspx?scid=kb;EN-US;292175
 
J

JackRnl

Thanks, registering the 3 objects solved the problem!


JackRnl said:
While opening 'Add / remove software' I don't see the list of programs
instelled but a messagebox instead, containing:

************
Title: Add/remove programs
An unexpected error occurred.
Class not registered
res://appwiz.cpl/listbox.htc
line:225
*************

Obviously the registry has been damaged. How can I repair this?

Hi

From the "Run" box try

regsvr32 %windir%\system32\appwiz.cpl

and
regsvr32 %windir%\system32\webvw.dll

and
regsvr32 %windir%\system32\mshtml.dll


If this doesn't help, in the German newsgroup, one person fixed the
same type of error by reinstalling IE
http://groups.google.com/[email protected]

and

Add/Remove Programs Tool Displays Installed Programs Incorrectly
http://support.microsoft.com/default.aspx?scid=KB;EN-US;266668

The article above also tells you how to repair Internet Explorer 6.0


See tip 6032 at http://www.jsiinc.com/reghack.htm as well

If this doesn't help, try to reinstall the OS service pack you already have
installed (or install a newer one if possible).


If the problem persists, you'll could do an in-place upgrade of the OS and
see
if it helps:

How to Perform an In-Place Upgrade of Windows 2000
http://support.microsoft.com/default.aspx?scid=kb;EN-US;292175
 

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