I have an HP Photosmart d110 printer/scanner. It's connected to a computer running WinXP. Up to a month or so ago I was able to control the printer from the HP software on the computer. That has suddenly STOPPED being possible. Everything still works, but it is apparent that something is interfering with the operation. It may be a program I installed recently, or it may be an automatic upgrade to one of the existing programs.

Does anyone have any suggestions as to how I can find out where the conflict occurs? I've run Process Explorer, and Autoruns, but haven't found anything suspicious.

You could try this link below and install this free tool to make sure that everything is up to date... it points out what software has known vulnerabilities and available or unavailable updates etc.

Quick way to solve this would be to rebuild the system fresh.

Trying to identify what is causing this issue could involve removing services or software until you pinpoint it, that is if its an actual conflict and not caused by some other issue such as corruption or registry key mess etc.


http://secunia.com/vulnerability_scanning/personal/Why not try uninstalling the HP printer software, downloading the latest version from HP, and installing it?  Thanks for the suggestion. I tried that first thing, with no result.Is this a USB printer ? ?
Did you remove it from Control Panel ? /
It needs to be disconnected on re-install and connected when prompted by the software...

Try Soybeans suggestion along with the suggestions above...It is a USB printer. I REMOVED it completely usin Control Panel. I re-installed the software from the ORIGINAL disk.
If I log into the computer using another identity, the program works as it should. This leads to the conclusion that some program in the original identity is causing the interference, I've asked for suggestions as to how I can find the interfering program, not how to solve the problem.Looks like corrupt profile then. If you create NEW user account for yourself and am able to print through this user account, then copy your data from old profile to new for personal data and favorites etc and then once you know that all important data is MOVED over you can then delete this old account.Thanks, Dave. That' a pretty tedious way to handle the problem, but it sounds like it would work.

I'll continue looking for a way to identify conflicting programs, but at this point I don't have much hope.