Starting a few weeks ago firefox refuses to play video from netflix and prime video. I've googled a bit, but nothing worked. Using firefox 93.0 on windows 10, here is what I tried so far (not necessarily in that order): *Refresh page *Restart PC *clear cache *disable extensions *run in troubleshoot mode *refresh firefox profile *try a new firefox profile *reinstall firefox *checked whether the drm box is checked/checked and unchecked it a few times *reinstalled widevine *checked whether privacy.resistFingerprinting is false, since someone apparently had a netflix error related to that setting Probably forgot some. Also works fine on other browsers, just thought it was odd. Here is what the errors in the debugger say: on prime video: downloadable font: download failed (font-family: "Amazon Ember" style:normal weight:400 stretch:100 src index:0): status=2152398850 source: https://m.media-amazon.com/images/G/01/AUIClients/AmazonUIFont-amazonember_rg-cc7ebaa05a2cd3b02c0929ac0475a44ab30b7efa._V2_.woff2 The Components object is deprecated. It will soon be removed. amzn1.dv.gti.82b45cf3-7c88-8d4b-e754-2c59839b982d:2494:148 Content Security Policy: The report URI (about:blank) should be an HTTP or HTTPS URI. Content Security Policy: The page's settings observed the loading of a resource at blob:https://smile.amazon.de/15296b51-1883-49bd-b738-ab0bd00e2a82 ("worker-src"). A CSP report is being sent. on netflix: Content Security Policy: The report URI (about:blank) should be an HTTP or HTTPS URI. browse:194:28 Content Security Policy: The page's settings observed the loading of a resource at https://www.netflix.com/service-worker.js ("worker-src"). A CSP report is being sent. browse:194:28 ​