Extremely slow copying files using Windows 7 64 bit OS

Question

Extremely slow copying files using Windows 7 64 bit OS

I have setup two pc, one running windows 7 and one xp and they are shared via wi-fi.
I can copy file from xp to windows 7 very quickly but it is very slow copying from windows 7 to xp in particular maybe it includes subfolders or cab files.
What is wrong?
Thanks

It gets hung on Time Remaining:   Calculating....
                       Items Remaining:  Calculating...
                       Speed...                Calculating...

Answer 1

Try to disable TaskOffload on the TCPIP stack:

I had the same problem--slow file copies from the network. BITS was already disabled, and the problem persisted in Safe Mode.

It turns out the problem appeared to be the TCP Offloading to the network adapter. The NIC in my laptop (Atheros AR8152) had issues with the taskoffloading.

As soon as I disabled task offloading, my network throughput went from 10kb/sec to full line speed.

Disable TCP offloading by modifying the registry:

1. Open Regedit
2. Browse to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters
3. Create a new REG_DWORD (32bit) value "DisableTaskOffload"
4. Set the data to 1
5. Reboot the computer

This will have the CPU handle the network processing. I noticed the CPU doing stuff when copying but at least I was able to copy data.

Enjoy!