Please note that Quicktime for Windows was deprecated in April 2016 due to security flaws (link).

Release 2018.1 includes a new ProRes implementation to replace the reliance on Quicktime.
In the console, this is shown as DV ProRes Read v1.14 and DV ProRes Write v1.14.

You will still require QuickTime to support the import of files that require legacy QuickTime Codecs.

The supported version of Apple Quicktime is included in the application installers.

From 2015.X7.7.6 (now considered legacy)