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I had a server I was trying to sort through errors with and was having a hard time sorting through the Event Viewer because of the constant errors we were getting issued by DCOM. I tracked down the problem in the registry and found that it was associated with the HP Port Monitoring DCOM module.

Event Type:    Error
Event Source:    DCOM
Event Category:    None
Event ID:    10015
Date:        3/9/2009
Time:        3:38:12 PM
User:        DOMAIN\Username
Computer:    Server
Description:
The machine wide limit settings do not grant Remote Launch permission for the COM Server application with CLSID
{5A5AA0AA-1DEB-4683-96B0-B43301E83971}
to the user DOMAIN\Username SID (S-1-5-21-297925193-1886344193-3212067294-1225).  This security permission can be modified using the Component Services administrative tool.
To resolve the issue I located the computer that the user referenced in the error message was using and did the following:

Clicked on Start, went to run, and typed in dcomcnfg.exe
Browse the tree and went to Component Services -> Computers -> My Computer ->DCOM Config
Right clicked on “HP Port Resolver” to bring up properties
Selected the “Location” tab
Checked the box for “Run application on the computer where the data is located”and left all other boxes blank.

We have had continual problems with HP Laserjet scan to PC functions. The latest was on a HP Lasejet 2840 color all in one printer. I found one article on the HP website that helped me resolve the issue.

http://forums11.itrc.hp.com/service/forums/bizsupport/questionanswer.do?admit=109447626+1222727447516+28353475&threadId=1212416

I had to do things a little different from the last comment that was posted.

- Kill the “Status~m” process in task manager

- download and run the HPFixscan utility from  – tinyurl.com/8cn8m

- restart the computer (or restart the HP Toolbox) 

I was then able to scan again to the PC