From the menu click Tools > Global Options.
Highlight Transfer Settings.
Select the Verify file integrity after each transfer using CRC checksums check box.
The File Integrity CRC Checksum will ONLY be used if all of the following are true statements:
The file integrity feature is turned on in one or more locations in CuteFTP Pro.
The FEAT command is enabled in CuteFTP Pro (Tools > Global Options > Navigation Settings).
The remote server supports both FEAT and XCRC and has enabled it for the specific user account.
The files are binary files transferring in binary mode.
The destination file size is smaller than the source and the server supports resume OR the destination is equal to the source size (regardless of resume capability).
Few servers, other than GlobalSCAPE’s Secure FTP Server support the required XCRC command.