I know this isn't the Criterion Channel's fault, but that of content providers who can't seem to come up with DRM software that doesn't prevent paying customers for accessing the content they, again, PAID FOR in good faith. I have no idea why I could watch films on the Criterion Channel for an entire year without getting this error message, yet now, with no change in my hardware, the DRM software assumes I'm trying to pirate content.
THIS IS THE SORT OF THING THAT MAKES PEOPLE PIRATE.
Thankfully the Criterion Channel still works on our big TV, so it's not like my subscription (prepaid) is now worthless. But I'm going to miss the convenience of watching on my PC too, when, for example, Sylvia is using the TV or I'm writing a review on one monitor while watching the film on another.