I am unable to install software - twain driver - for my Visioneer Scanner and have Sophos installed as the virus protection system. How do pause or unlock the Security Centre (Windows XP)so that the driver will install ?
Check the following which i believe would be the case.
For the scanner to communicate correctly the Still Image Services needs to be running in the background. To check this open the Control Panel and look under Services in Admin Tools.Check to ensure that the Still Image Service is running correctly. (It Likely is)
so, If all this is OK, I would recommend removing the scanner driver in the following way.
With the scanner still connected go to Device Manager. Under Imaging Devices right click on the scanner and select uninstall.
disconnect your scanners USB lead and remove the rest of the driver using the utility if you have one.
Before reinstalling the driver you must restart your PC and then reconnect the scanner.
The following as your running a "camera"
A further cause of the TWAIN error occurring is if there is a conflict with another TWAIN compliant device, such as a Digital Camera or scanning device(including Multifunctional devices.
If you have such a device installed try removing uninstalling its "software" before reinstalling the "scanner" driver first.