Publish won't test in browser, but Test Movie will

Hey all,

No idea what is happening here. I have an HTML5 Canvas document, and on Friday, I could hit Publish to test my animation in the browser, but today that won't work. However, if I hit Test Movie, it opens in the browser as expected.

Nothing has changed as far as I know (unless Windows installed an update that I'm not aware of).

I have tested in a fresh project, and in the existing projects. No dice. I have uninstalled Animate, and reinstalled. I've changed my default browser to check if that might have been causing the issue. No luck.

Any suggestions? If you need more info, please don't hesitate to get in touch. Again, this exact project (and numerous others) worked on Friday, but for whatever reason, they won't today.

I have also tested on a second system where this functionality was working, and have run into the same problem.

System details:

Windows 10 Pro (20H2)

Animate (21.0.3 - Build 38773)

i9-9900X

64GB RAM

Nvidia RTX 2070 (457.30)

Cheers,

Darren