04-14-2010 04:46 AM
My HP C4180 has always worked fine until now. It still prints ok, but won't scan any longer. If you try to scan or copy, you get error message "the function requested cannot be performed because another program already has control of the device." The printer itself says "unable to scan or copy". Going into the Control Panel and Printer: There are no printing jobs in the queue. Don't know of any changes that have been made. Maybe I could try using a different USB port?
04-20-2010 03:27 PM
Hi bluegrassed, would you try the scan diagnostic tool mentioned here?
Very interested in what you find. Thanks.
07-04-2010 03:27 PM
I have the very same problem as Bluegrassed, and when I google "another program already has control of the device" it seems, that there are many of us out there with this very problem. I have installed, un-installed, downloaded and installed, updated, rebooted, unplugged, reset, deleted other programs, disabled all security software, tried a ton of fixes suggested around the web, re-formatted, run the diagnostic tool you mention several times and nothing has changed a thing.
The diagnostic tool tells me:
"another program already has control of the device etc etc" (surprise, surprise)
Windows (WIA) scan:
"the diagnostic program can't scan, close all programs, uninstall and re-install drivers and restart"
"can't find certain components, repeat installation"
"certain components are missing, re-install software"
I have given you the short version of what is said there, but I imagine you get the picture. I simply cannot believe that un-installing and installing again, again, again will fix this, so if you have any ideas whatsoever I would love to hear them.
Btw. this device has been working with this computer in the past.
08-17-2010 10:28 PM
I got this tip from HP forum and applied it, solved my scanner driver problem at once. Here is the tip:
In Windows click run, then type "regedit" click OK go into the registry window.
Then find HKEY_LOCAL_MACHINE
|_ Current Control Set
This is where your computer's "IMAGING DEVICES" registry hides. e.g. scanner, etc.
The registry MUST be like following format:
Name Type Data
(Default) REG_SZ Imaging Devices
Class REG_SZ Image
Icon REG_SZ 0
Installer32 REG_SZ sti_ci.dll,ClassInstall
TroubleShooter-0 REG_SZ hcp://help/tshoot/tsInputDev.htm
IF YOU HAVE MORE THAN 5 INPUTS, DELETE ALL VIA RIGHT CLICK.
Then, even if you had installed before, uninstall first and reinstall your scanner driver again, restart your computer and your scanner should work properly.
02-12-2013 05:34 PM
Please help! I am right at where you state the registry must have no more than 5 entries. But i don't understand your next step once you have opened the little folders to the right level I am so close please help!