[Setup]: OnlyBelowVersion

Format:

a.bb,c.dd, where a.bb is the Windows version, and c.dd is the Windows NT version.

Default value:

0,0
Description:

This directive lets you specify a minimum version of Windows or Windows NT that your software will not run on. Specifying "0" for one of the versions means there is no upper version limit. Build numbers and/or service pack levels may be included in the version numbers.

This directive is essentially the opposite of MinVersion.