[Outlook Problem: Outlook Express has been removed?]

I am running Outlook Express 6.00.2900.5512.

It is working, but when I boot up the computer I get a message that Outlook Express has been removed. It has not. I have tried to use Outlook, but I get a message that Outlook Express version 5 or more needs to be installed first. How do I fix this problem. I'm almost ready to do a complete format, but that is a lot of trouble to get everything back. Any suggestions will be greatly appreciated.
Thanks.

 

Re: Outlook /Outlook Express has been removed

Looks like no answers to this one. However, I found the problem as below

"This happens after setting the IsInstalled flags to 0, as a part of the suggestion in article Q318378. But, after reinstallation of Internet Explorer, the IsInstalled value should change to 1 automatically. If that does not happen, manually edit the registry and set the value to 1 in both of these locations

For Internet Explorer

HKEY_LOCAL_MACHINE
\SOFTWARE
\Microsoft
\Active Setup
\Installed Components
\{89820200-ECBD-11cf-8B85-00AA005B4383}

For Outlook Express

HKEY_LOCAL_MACHINE
\SOFTWARE
\Microsoft
\Active Setup
\Installed Components
\{44BBA840-CC51-11CF-AAFA-00AA00B6015C} "