The process cannot access the file because it is being used by another process.

WinSCP v 6.3.5, Windows 11, v 23H2, Upload to GoDaddy using FTP - SFTP does not work. This is an install package just built by InstallShield v 24 r1. All recent attempts at uploading failed with the subject error message except one which, on another computer (same details) had a failed message but the file was intact after closing the message. The file is the latest version of ccScan, Release #66, 3.8.66.5554, Oct 17, 2024 from this link:
https://www.CaptureComponents.com/updates/Setup_ccScan.exe
I can copy the file freely among 4 computers on same intranet. But always fails when uploading to to Godaddy.
Do you have any ideas about how to prevent this?