Errors when copying files to NAS

[alexinquest]

I get errors when copying files (F5, in background) from my PC (Windows 7 32bit) to a NAS device (D-Link, DNS-320 with 2 GB hard drive in it). The errors are only discovered after doing a "compare by content" routine under folder synchronization. About 30% or so of files are corrupt, contain errors.

The same happens with a USB external hard drive connected to a USB port on the router (TP-Link) on my network.

However, if the above files are copied via Windows Explorer the above errors do not occur.

[Dalai]

Which TC version do you use? Which copy method do you use in TC? Do you have Antivirus and/or firewall software installed? If so, did you try to copy files with the Antivirus and/or firewall software disabled?

Regards
Dalai

[alexinquest]

I use the latest version of TC. Updating to the latest version from 7.56 did not change the behavior.

I don't use antivirus. Disabling the built-in windows firewall did not change anything.

I use standard copy method: source in one panel, destination in another, then select, F5 and F2 for background.

One correction to previous post: not 30% of files have errors, but maybe around 5 % or less. These are pictures and videos that i'm trying to back up to NAS, and the copied pictures with errors would have, say, half a picture missing, or wrong colors. etc.

File size, date, time are correct. The errors are only discovered after "by contect" check.

Thanks, appreciate your help.

[Dalai]

I use standard copy method: source in one panel, destination in another, then select, F5 and F2 for background.

That's not what I meant. I mean the copy method set in Configuration > Operation > Copy/Delete.

Regards
Dalai