If an addin is in the inactive list it's almost always the deployment
machine missing a dependency. It can also be a dll that needs to be
registered and isn't. Usually you use an error log to see if the code is
actually being executed before some exception caused the addin to fail. If
the addin never gets to the error log then it's usually a load failure,
again due to a missing piece.

If that's the case you need to use Fusion logging to see where things are
failing. Fusion is the managed code loader. Take a look at
http://blogs.msdn.com/vsod/archive/2...-failures.aspx,
which has invaluable information for troubleshooting managed code loading
problems, including Fusion logging.

--
Ken Slovak
[MVP - Outlook]
http://www.slovaktech.com
Author: Professional Programming Outlook 2007.
Reminder Manager, Extended Reminders, Attachment Options.
http://www.slovaktech.com/products.htm


"Gokul" wrote in message
...
Dear Ken,

Thanks for your reply. I read the links, sorry learned from the links.

Now I have new problem. I changed the Outlook version 2003 in development
machine, it is perfect in my machine. I tried to install on another
machine
XP and Outlook 2007. God saved me, from the problem for a while. But it is
not happen for long. I extend my testing, I tried in Windows Vista and
Outlook 2007. Nothing happens, I found my add-in in inactive
application(unloaded). For me It is like treasure hunt. Also tried to
change
regedit path but nothing happens. I need your help on this.

Thanks
Gokul