To resolve this issue, follow the steps provided in the below articles:
If you are still unable to burn DVD/CD, please provide the following information:
• Are you attempting to burn a CD or a DVD?
• What happens when you attempt to move the video file?
• Did you receive any error messages?
• Is this happening to all DVD/CD's or just with a particular one?
• What version of RealTimes or RealPlayer is installed? (See https://customer.real.com/hc/en-us/articles/204039513)
• What is the operating system of your computer (Windows XP, Vista, 7, 8, 8.1, 10)?
• Do you have any security software installed (Norton, McAfee, AVG, etc.)?
The more specific you are, the better I will be able to assist you.