Firefox Support Forum

Hi

I recently updated to 78.10.0 vers and now when I try to play Netflix I get the WidevineCdm crash message and Netflix won't play

I have refreshed Firefox and restarted my Mac several times and disabled the Adobe Shockwave player.

Nothing works.

Can you please help me?

Hi everyone,

it's been 2 days now since every time I open Netflix and Amazon Prime videos won't play. A yellow bar saying: "The WidevineCdm plugin has crashed" keeps coming up!

I'm using Firefox and I'm on a MacbookPro.

I've tried everything: restarting/shutting down device; reinstalling Firefox; deleting widevine folder and activate it from the adds on page; tried on other browsers (works on safari but not on chrome); contacted Apple / Netflix / Amazon / Google nobody was able to help; I also ran these websites with my Mac in safe mode...nothing was able to resolve it.

What can I do to fix it please?

This started to happen out of the blue...I haven't installed anything! It was working fine until the day before...

There are always PR_END_OF_FILE_ERROR type error given by Firefox when opening secure https:// official web sites of government of India, which end in gov.in Why not firefox browser allow opening such websites which are authenticated government web sites ?

Each of the threads below is someone reporting the same problem (which I also have), with the same timing. Suddenly on 21 April 2021 all (?) major streaming sites started to give "The WidevineCDM plugin has crashed" message and ceased to work .

https://support.mozilla.org/en-US/questions/1333289 https://support.mozilla.org/en-US/questions/1333332 https://support.mozilla.org/en-US/questions/1333503 https://support.mozilla.org/en-US/questions/1333613 https://support.mozilla.org/en-US/questions/1333506 https://support.mozilla.org/en-US/questions/1333571

No suggested fix works. Reinstalling does not help, toggling DRM application does not help. It was obviously the update (at least for users on 78.10.0esr with OS X 10.9.5) that did it. Is there some way to get this registered as a bug?

My hide tab bar with one tab code has broken with 76. The tabs themselves remain collapsed, but the bar remains. Here's my userChrome file:

/* Modify to change window drag space width */
:root[tabsintitlebar="true"] #nav-bar{ --window-drag-space-width: 24px }

.titlebar-buttonbox-container{
  position: fixed;
  display:block !important;
  top:0;
  right:0;
  height: 40px;
}
#toolbar-menubar[inactive] > .titlebar-buttonbox-container{ opacity: 0 }

:root[sidemode="maximized"] > #navigator-toolbox{ padding-top: 8px !important; }
:root[sizemode="maximized"] .titlebar-buttonbox-container{ top: 8px }

:root[uidensity="compact"] .titlebar-buttonbox-container{ height: 32px }
.titlebar-buttonbox-container > .titlebar-buttonbox{ height: 100%; }
#titlebar{
 -moz-box-ordinal-group: 2;
  -moz-appearance: none !important;
}
:root[tabsintitlebar="true"] #nav-bar{
  padding-right: calc(138px + var(--window-drag-space-width,0px));
  padding-left: var(--window-drag-space-width,0px)
}
.titlebar-placeholder,
#TabsToolbar .titlebar-spacer{ display: none; }
/* Also hide the toolbox bottom border which isn't at bottom with this setup */
#navigator-toolbox::after{ display: none !important; }

/* Menubar on top patch - use with Fx65_tabs_on_bottom.css */
/* Only really useful if menubar is ALWAYS visible */

#navigator-toolbox{ margin-top: 22px }
#toolbar-menubar{
  position: fixed;
  display:block !important;
  top: 0px;
  height: 22px;
  margin-top:1px;
  width: 100%;
  overflow: hidden;
}

#toolbar-menubar .titlebar-buttonbox-container{ height: 22px; }
#toolbar-menubar .titlebar-button{ padding: 2px 17px !important;  }

/* This will allow you to MAYBE put some items to the menubar */
#toolbar-menubar > *{ float: left }
#toolbar-menubar .toolbarbutton-1 { --toolbarbutton-inner-padding: 3px }

/* Makes tabs toolbar items zero-height initially and sets enlarge them to fill up space equal to tab-min-height set on tabs */
/* Firefox 65+ only */
/* !!USER!! -  REMOVE ALL BUTTONS you can from the tabs toolbar */

/* Configurable window drag space  */
:root[sizemode="normal"] #nav-bar{ --window-drag-space-width: 20px }

#titlebar{ -moz-appearance: none !important; }
#tabbrowser-tabs, #tabbrowser-tabs > .tabbrowser-arrowscrollbox{ min-height: 0 !important; }
:root:not([customizing]) #tabbrowser-tabs .tabs-newtab-button,
:root:not([customizing]) #TabsToolbar .titlebar-button{
  -moz-appearance: none !important;
  height: 0px;
  padding-top: 0px !important;
  padding-bottom: 0px !important;
  -moz-box-align: stretch;
  margin: 0 !important;
}
#tabbrowser-tabs .tabbrowser-tab{ height: var(--tab-min-height) }
#tabbrowser-tabs .tabbrowser-tab[first-visible-tab="true"][last-visible-tab="true"]{
  visibility: collapse !important;
}

/* Button re-styling */
#tabbrowser-tabs .tabs-newtab-button:hover{ background-color: var(--toolbarbutton-hover-background) }
#tabbrowser-tabs .tabs-newtab-button > .toolbarbutton-icon{
  padding: 0 !important;
  transform: scale(0.6);
  background-color: transparent !important;
}
/* Extra top padding  in maximized window */
:root[sizemode="maximized"] > #navigator-toolbox{ padding-top:7px !important; }
/* Fix window controls not being clickable */
#toolbar-menubar:hover{
  min-height: calc(var(--tab-min-height) + var(--space-above-tabbar) - 1px) !important;
  height: calc(var(--tab-min-height) + var(--space-above-tabbar) - 1px) !important;
  -moz-appearance: initial !important;
}
#nav-bar{ padding: 0 var(--window-drag-space-width,0px) }

/* Hide blue stripe on active tab */
.tab-line[selected="true"] {
  opacity: 0 !important;
}

 #toolbar-menubar, #menubar-items, #main-menubar {
 background-color: #F8F8FB !important;
 background-image: none !important;
}
 #TabsToolbar, #menubar-items, #main-menubar {
 background-color: #F8F8FB !important;
 background-image: none !important;
}

/* Change Color of Active tab */

/* Change Color of Normal Tabs */
tab:not([selected=”true”]) 
{
	background-color: rgb(240,240,245) !important;
	color: black !important;
}

/* Hide solo tab */
#tabbrowser-tabs tab[first-visible-tab="true"][last-visible-tab="true"] {
  visibility: collapse;
}
/* Hide New Tab Button immediately next to solo tab */
#tabbrowser-tabs tab[first-visible-tab="true"][last-visible-tab="true"] + toolbarbutton {
  visibility: collapse;
}

Any help is appreciated.

In Firefox 74, I would like to make the default start page dark. Plugins will not work for this, and an I have not seen, option in the settings. I searched and I didn't see anyone ask this specific question. Thanks in advance!

On saturday our global sertificate expired and we renewed it a bit late. Now Firefox users cant visit our site, seeing this error message.

   Secure Connection Failed. 
   Please contact the server administrator or email correspondent and give them the following information: Your certificate contains the same serial number as another certificate issued by the certificate authority. Please get a new certificate containing a unique serial number.
   
   Error code: SEC_ERROR_REUSED_ISSUER_AND_SERIAL 
   
   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. 
   Please contact the website owners to inform them of this problem.

Unfortunately the only way to fix it we found is deleting the whole profile, deleting the sertificates themselves does not work for us. It is very difficult for our users to do it. Can you please help us with this problem?

Hi, I've tried enabling Java Script but I must have chosen one of Firefox's browser extensions that is blocking it. I just don't know which one. How do I see those and make changes?

Thanks

Why would a sites display language change like the link below? It is HP's website so I'd assume it is reputable. https://parts.hp.com/hpparts/Default.aspx?mscssid=&cc=CZ&lang=CS&.... (image below too) I was browsing in English, it changed czech on that page, and then back to English on the following page. Should I be concerned?

# My problem

When i go to some site with video (for example https://www.openproject.org/ ) i have the following message : "To play video, you may need to install the required video codecs".

# Spec

I run Firefox Beta in Fedora, it's installed in /opt/ folder. I have the "normal" version of firefox too and the video works well.

# Some other infos

The video seem to be a mp4 video and i have the following package installed in my fedora GStreamer Multimedia Codecs (Multimedia plauback for APE, AVI, DV, FLAC, FLX, Flash, MKV, MP4, Speex, VP8, VP9 and WAV).