If you are encountering this error while using a currently supported Killer Network Adapter, such as the Killer E2200, E2400, E2500 or any Killer Wireless Adapter, we suggest clean-installing the latest Killer Control Center.
Click here for our guide on clean installing the latest Killer Control Center.
This issue applies to users with the E2100, 2100, and Xeno Pro legacy devices.
You can correct this error by installing Flash within Internet Explorer, which is where the Killer app performs its check. You do not need to use Internet Explorer as your browser going forward. Opening Internet Explorer and installing Flash should resolve the issue.