Hi, The reason behind the incompatibility of libwidevinecdm.so could be that I'm using the Firefox distributed directly by Mozilla, and not the one provided by Debian.
*> Can you verify that Widevine is working correctly for you in Firefox?* Netflix works, so I assume Widevine works. *> Do you happen to have a second system you can test?* I don't have another Debian system around. Kind regards. Dr. Koutheir Attouchi.