Windows 10 Why did the latest update disable my Chromium browser?

So my Windows 10 updated this morning. For gaming purposes I had an older version of Chromium installed (which could run NPAPI Flash Player, version 330231). Now, whenever I load this browser I get the "He's dead, Jim!" message. My question is why is this happening? This is literally the only browser I can play my Flash games on as the latest Pepper flash players are simply diabolical for performance.

I would appreciate it if I was able to select my own browsers for MY computer, thank you. Any help would be appreciated.