Windows download is blocked by "Cisco Umbrella"

[aerandir92]

"Security threat checked and blocked"
Slightly high-res image, sorry for the size.

[Woodstock]

Can't do much about that - you'll have to raise a trouble ticket with whoever controls your firewall.

Two things that will work against you: makemkv.com is hosted in Russia, and access to it is through Cloud Flare.

Some firewalls block anything that meets either "warning sign".