Rust Launcher ERror: Error Validating EasyANtiCheat code signing certificate

just installed game, never played. this is the error I get.

Rust Launcher Error: LauncherFailure - Error validating EasyAntiCheat code signing certificate.

I have googled the issue and it seems to be fairly rare, however no thread I can find has a solution posted.

Make sure you’ve done your Windows updates.

indeed i have, Your device is up to date. Last checked: Today

Your Windows Certificate Store is out of date and thus unable to verify EasyAntiCheat’s code signing certificate. Are you on a Windows 10 preview version or such?

started as a 10 pro preview, now activated.

i might format and see if it clears.