Can't view movies posted on SKYGUIDE-DESKTOP

I'm using SN7 guided tours from my Win10 laptop. Usually when I try and play a movie by clicking on the guided tour offering I get an access error:

https://skyguide-desktop-consumer.starrynight.com/skyguide/tours/oursolarsystem/the_sun/media/sun_Future.mov

<Error><Code>AccessDenied</Code><Message>Access Denied</Message><RequestId>F7354B56C023E0F8</RequestId><HostId>dKrXgPkdMJYwmg4jlPemJE3rR5eHEM0lHffDVJ0DRmBp9uyE+EykecgMMWigkeAY/Z/MWWaQzfw=</HostId></Error>

I can successfully get this file however (as an example):