@user123: You most likely need to upgrade.
See Why the switches do not work in my script?

We're using Version 4.0.4 Build 346, and have the same problem. Added -nopermissions and -nopreservetime does not work, error:

File or folder '-nopermissions' does not exist.

Any ideas?

Using Version 4.2.9 Build 938, I was having the same problems until I added the
-nopermissions and -nopreservetime. Worked like a charm after that.

@cdlvj: The file must be owned by the user who is overwriting it. It is not enough to have write permissions to update timestamps and/or set permissions.

I have hit this same error, 1st time in many months.
What can the client at the server end do to prevent this error?

All our clients have it set correctly except for one.

This request has been added to the tracker:
Issue 321 – Switch for "Ignore permission errors"

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Edit 2023: Rejected in favor of -nopreservetime and -nopermissions switches, mentioned above.

As covered in:
Transfer was successfully finished, but temporary transfer file … could not be renamed to target file name …
... you can use -nopreservetime and -nopermissions switches to put command.

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If you really want to enable the "Ignore permissions error", see
How do I configure site, transfer and/or any other settings for which there are no script commands?

We currently use WinSCP 4.0.3 in script form to place transmit numerous files to external servers.

This has been running fine, until this morning, when I added a new job.

The error received is:

Upload of file 'test.csv' was successful, but error occurred while setting the permissions and/or timestamp. If the problem persists, turn on 'Ignore permission errors' option.

I just want to ignore this error, the file goes ok – I just need a switch to use at command line in a script which ignores?

Thanks