Error 4003 - FIXED!

YouTube constantly changes it's algorithm. This can cause the 'Signature problem (4003)' error.

We did our best and have solved the problem immediately. Please re-install the program and enter the YouTube link again. Follow the steps bellow:

1. First, uninstall the DVDVideoSoft app: Click Start → All Programs → DVDVideoSoft → Uninstall (check the box 'Select all')
2. Download and install the last available version on the website

http://www.dvdvideosoft.com/products/dvd/Free-YouTube-to-MP3-Converter.htm

https://www.dvdvideosoft.com/products/dvd/Free-YouTube-Download.htm

Thank you for your understanding and support!