FTPS filezilla 3.24 "Key usage violation in certificate has been detected."

Hi,

I'm using FTPS to protect access to IIS FTP services, with self signed certificates. Starting from version 3.24, filezilla reports that "Key usage violation in certificate has been detected." because there is some restriction on the certificate key usage parameters. It seems that the IIS certificate is not full RFC 5280 4.2.1.3 compliant.

Any idea to create a compliant certificate on IIS?

thanks