To resolve this issue, follow the below article:
If you are still unable to download videos, please provide the following information:
• Is this happening to all videos, on all sites or just with a particular one (YouTube)?
• What web browser do you use, and which version? (See https://customer.real.com/hc/en-us/articles/207275617)
• 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 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.
Note: I wanted to let you know that we have edited your original post to remove your email address to protect your privacy. We do recommend that you refrain from posting personal information in a public Community forum.