Window Migration Assistant

I receive the following error when I try to download the latest migration assistant. I recently upgraded my macbook pro to Catalina FYI. My window laptop is running Windows 7.

Error message -> "AccessDeniedAccessDeniedF0F416B58D634E57z4ANs23pObSbAE0SZfvxxhdBYraoLtKWqs5iIsdhoiKYH1DgdyXLlzemrm2MqxHzDn2oZShikTY="

Any help would be appreciated.