If your Silverlight player is off-center on your computer, preventing access to player controls or showing a black bar at the top of the page, it's usually caused by blocked or failed advertisements that have been added to the page by third-party software. Netflix doesn't show ads to our members. If your browser or security software is blocking ad content, you may see an empty black space:
To resolve this issue, use the anti-malware, anti-adware or antivirus software recommended by your computer manufacturer or an IT professional.
While Netflix as a company does not endorse or advocate specific vendors, here are some software vendors that sell or provide free tools to help prevent or resolve this issue on your Windows or Mac computer:
Whichever program you choose to use, be sure to keep it up to date.