DCOM Run location problem

[gmorse]

Hello, I'm a little new to COM/DCOM, and have been tasked with resolving an issue that one of our customers is having with our COM application on some of their machines. Whenever they try to start up the service, it starts and stops immediately. We had them open the properties for our application under component services and noticed the "Run application on this computer" checkbox is unchecked (it is typically checked) and greyed out on all of the machines that are having the problem, and I believe this to be the underlying cause of the problem. This app was working fine for a few months on all of these machines, so it was originally installed properly. Was there a Microsoft security update released recently that might be causing this? The machines are all XP SP2.

Any help is greatly appreciated.

 

[AbsoluteKevster]

Do you have a server which has recently been upgraded to W2003 Server SP1, SP2 or R2?
These all contain revised DCOM Security.
Check out the Properties of your App's component using Start>Run>DCOMCnfg
(On the server)

You will see that the permissions are restricted by default.
(Which reversed the 'unrestricted DCOM' access of W2003 unpatched.

Hope this helps.

Welcome to the Forum
(Sorry you had such a late reply!)

Kev