Warning: Please select a file! in Opencart

I'm using Opencart version 1.9.4.3,  windows server 2003, IIS 6 and PHP Version 5.3.8. Try to upload image in opencart and error message "Warning: Please select a file!" prompted.

After check on the php eror log file, The error log show "Warning: File upload error - unable to create a temporary file in Unknown on line 0"

Solution for this issue is edit upload_tmp_dir in php.ini.

For example, change to
upload_tmp_dir = "C:\PHP\temp"

after the finish edit, restart the web server.

Done. Problem solved.