I tried to update my Dell Webcam Central to 2.01.17, the files were successfully downloaded but the setup gets stuck at 'Updating system files screen'. Compatibility Windows XP SP3.
System: XPS 15 L502x - Windows 7 64bit
Welcome to the Community. You may have to uninstall and reinstall Dell Webcam Central. Use the below link to troubleshoot Dell Webcam issues.
Hope this helps.