I have a customer with KAV 6 manage by Kaspersky Admin Kit. The customer use a home made software code in cobalt. To print the developper have made a batch file to print.

The batch file do this:

net use lpt3 //shared/printer
copy file lpt3
net use lpt3 /delete

The problem is on WindowsXP the copy section take a while to execute (30-50 sec). When i disable KAV is almost instanly.

I have make some exclusion test: cmd.exe copy.exe batch.bat disable KAV firewall nothing change

Need some help here the owner want us to refund the product

Thanks

What is a size of "file"? Is it a text file, or a binary?

Also try:
xcopy file \\shared\printer
(without using "net use")

The batch file has been already modified by the developper to use "copy file \\share\printer"

Xcopy is slower, and cause slow down on Windows 2000

The file is ascii plain text and the size is about 8k to 200k

The problem is easy to recreate:

- Make a text file with 1 word in it
- do a copy text.txt \\shared\printer

The Windows is jam until the copy finish

ctrl+alt+del wont show up until the copy is finish ...

What is the exact version?

Doum88, you are right.
I have exactly the same effect (system hangs for about 30 seconds) until fob is finished (so probably this error is reproducible).

I have installed KAV 6.0.2.690 and NA 6.0.1405.
AV Module responsible for this slow print is (in my opinion): Proactive Defense

Kaspersky Anti-Virus Worstation 6.0.2.678

I have disable the proactive protection and the problèm is still there ...

Update... after disable proactive protection, i need to reboot the workstation to fully disable de protection then the copy to printer is working OK

Thanks for the help