Photoshop TWAIN driver being blocked by Virus Scanner / Firewall

I have recently acquired a new printer/scanner (a Dell 1815dn, running under Windows XP, with USB connection), but I am having problems acquiring scans from it in Photoshop.

Photoshop can acquire scans from my other printer/scanner without any problem, and other imaging programs can acquire scans from the new printer/scanner. However, when I try to acquire an image from the Dell 1815dn using Photoshop, although the TWAIN driver interface is called up, it will not communicate with the printer - when I press "Prescan" or "Scan", nothing happens.

After some experimentation, I found that the communication is being blocked by F-Secure (my virus scanner / firewall): if I disable the "Virus and Spy Protection" module (but not the firewall?!?), the TWAIN driver works.

I have spent 2 weeks trying to resolve this matter with F-Secure, but so far they have been no help. (They have suggested a couple of changes to the firewall configuration, but these have had no effect.)

I do not know enough about how the TWAIN driver works interfaces with Photoshop to begin to try modifying the F-Secure's settings to permit the necessary communication. Can anyone advise me on this?

Many thanks.

Jon

Try shutting down you scanner software before using Photoshop, then in Photoshop: File > Import > (Choose Scanner by Name, for example, "Epson Perfection 4490."

PS will reopen your scanner software, and hopefully it will work.

Thanks for the suggestion, Eric. I have tried that, but unfortunately it didn't help.

wrote in message

I have recently acquired a new printer/scanner (a Dell 1815dn, running under Windows XP, with USB connection), but I am having problems acquiring scans from it in Photoshop.

Photoshop can acquire scans from my other printer/scanner without any problem, and other imaging programs can acquire scans from the new printer/scanner. However, when I try to acquire an image from the Dell 1815dn using Photoshop, although the TWAIN driver interface is called up, it will not communicate with the printer - when I press "Prescan" or "Scan", nothing happens.

After some experimentation, I found that the communication is being blocked by F-Secure (my virus scanner / firewall): if I disable the "Virus and Spy Protection" module (but not the firewall?!?), the TWAIN driver works.

I have spent 2 weeks trying to resolve this matter with F-Secure, but so far they have been no help. (They have suggested a couple of changes to the firewall configuration, but these have had no effect.)
I do not know enough about how the TWAIN driver works interfaces with Photoshop to begin to try modifying the F-Secure's settings to permit the necessary communication. Can anyone advise me on this?

Many thanks.

Jon

The problem looks to me like that F-Secure has identified the TWAIN driver as malware. Such drivers are furnished by the printer manufacturer. You really ought to take your problem to them.
Jim