Dear all, I'm facing a similar issue while trying to watch Netflix as the one described in the following post but on a 64-bit machine: https://support.mozilla.org/en-US/questions/1246576 Environment: Debian stable, everything updated Firefox ESR 60.5.0esr Extensions: Adblock Plus NoScript Plugins: OpenH264 Video Codec provided by Cisco Systems, Inc., V 1.7.1 / enabled Widevine Content Decryption Module provided by Google Inc., V. 1.4.8.1008 Output of about:support: (...) media.gmp-widevinecdm.abi x86_64-gcc3 media.gmp-widevinecdm.autoupdate true media.gmp-widevinecdm.lastUpdate 1549027671 (...) Measures taken: - Toggled DRM in the settings off-on, w/ restart of FF - Started FF in safe mode w/ Extensions disabled - Host-files are empty, afaik Side-notes: - Worked fine until a few days ago - Amazon-prime player stopped working on FF about two weeks ago - Netflix works on FF on Win10 on the same machine, there w/ widevine 4.10.1146.0 - While trying around, a few times the teaser-videos at Netflix in the background startet to play as they usually do but without any recognizable connection to my actions. o.0 Cheers!