On Download from FTP to Windows some random files have size 0

[spellbound]

I used Filezilla for some years now and didn't change anything with my configuration, I just updated the version whenever Filezilla asked me to.

The last months I could see that a download of my whole FTP seems to work as usual, but some files will get the file size 0 although on the FTP they have a size > 0. I can re-download them and all is good.

This is only for appr. 20 files of 30,000, but always different files. I download the whole FTP every week and always see this mad behaviour.

I think this is critical.

[spellbound]

Oh, I have two computers, one at home and one in the office. This behaviour is the same on both.

[Tim Kosse]

Are there any error messages displayed in the message log?

[spellbound]

no, and all files are listed in the "successful" list

[spellbound]

Hey, one idea: It might have to do with parallel downloads.

When downloading the whole FTP, I always receive messages saying things like "target file already exists", and then it shows me the server file with server size and server date as source file. And a target file with date = now and a different file size (usually the file size is larger).

Since I always download to an empty folder, this file has definitely not been there before.

I checked the FTP with two files and there are definitely not two versions of the same file (with capital letters maybe).

I always select to overwrite existing files. Maybe it happens here...!?

[Tim Kosse]

Are you by chance using Windows Firewall? If so disable it, Windows Firewall on Windows 10 Windows has more bugs than an infested grain silo.

[spellbound]

Yes, maybe I should do that. But I have another idea:

When that dialog (target file already exists) first appeared, I just recognized that the target file is newer, so I might have set it to "ignore source file", and to do this automatically.

I think this is the problem.

I just tried to download a few files to proof this, and again this dialog appeared three times. Two times I said "overwrite", and one time I said "ignore". The ignored file now has the wrong size: While it should have 8,231,361 B it only has 10,600.

As I said this dialog should not appear, because it is not a duplicate file and there was no target file with the same name in the empty directory. Maybe one process of my three parallel download processes (queues) sometimes tries to download a file that is already in the process of downloading by another.

If this is the case, then the firewall should not be the problem.

[spellbound]

So... any update on this?

I really think it is a serious problem. How can I use Filezilla to backup my web space, if I can't trust it to do this job properly...?

[Tim Kosse]

Are there any error messages displayed in the message log?

no, and all files are listed in the "successful" list

When downloading the whole FTP, I always receive messages saying things like "target file already exists", [...]
Since I always download to an empty folder, this file has definitely not been there before.

Those two replies are mutually exclusive. Please correct the wrong statement.