The wizard will detect the driver. Click Finish.
Visit the Internet Archive’s Wayback Machine or contact CodeSoft’s legacy support at legacy-support@codesoft.com. They can provide an FTP link. codesoft dp7645 iii driver download link
Do not search Google for “DP7645 III driver download” and click the first link. Most of those sites are filled with malware, outdated DLL files, or fake “driver updater” software. The wizard will detect the driver
The CodeSoft DP7645 III printer is manufactured by CodeSoft International (often distributed through OEM partners like Postek, Godex, or TSC depending on your region). However, the safest driver repository is maintained by the Seagull Scientific company, as they provide the industry-standard Bartender Drivers. They can provide an FTP link
Use the Generic ESC/POS driver (not perfect) or install Gutenprint (limited support). Most professionals use Bartender for macOS (Seagull’s Bartender) which includes a proprietary driver for the DP7645 III.
Do not just double-click the .inf file. Follow this exact order to avoid "Error 0x00000002" (Printer not found).
Use the official CodeSoft DP7645 III driver download link provided above. Save the ZIP file to your desktop and extract its contents using 7-Zip or Windows’ built-in extractor.