Windows 11 cFosSpeed Driver Upgrade Error

How to fix cFosSpeed driver preventing Windows 11 installation

By Jason Faulkner

Users trying to install Windows 11 are having issues with a program called cFosSpeed preventing the upgrade. The error message given states that the cFosSpeed Driver “isn’t ready for this version of Windows 10.” Unfortunately, most users won’t know what cFosSpeed is or how it came to be installed on their computers.

How to uninstall cFosSpeed driver and continue Windows 11 upgrade

Jason Faulkner
Jason Faulkner

Jason Faulkner is Evolve Media's Evergreen SEO Manager. On a typical day, you can find him working desperately trying to get late-1990s/early-2000s PC games working at 4K and 16:9 ratio without crashing.

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