Unfortunately, if none of the above steps work, it might be because your computer doesn't meet the Client and processor requirements. The ability to use a virtual background without a green screen â and to use the blur feature â requires different supported processors for macOS and Windows. You can find them all on the Zoom help page for virtual background requirements. One easy way to check if your computer's CPU is high enough is to head to "Backgrounds and Filters" and uncheck the box that says "I have a green screen" under "Virtual Backgrounds." Next, hover over your queue of virtual backgrounds. If you get an error message that says that you need a green screen to support virtual backgrounds, your computer doesn't support the blur background feature. Unfortunately, Zoom hasn't said whether it plans to extend its native blur feature to older computer models in the future, but you might need to go the old-school route of using a third-party app to get the blur effect if none of these fixes work.