Type about:addons<enter> in the address bar to open the Add-ons Manager. Hot key;’’'<Control> (Mac=<Command>) <Shift> A)

On the left side of the page, select Plugins. Make sure the ones you want to use are set to Ask or Allow. ++++++++++++++++++++++++++++++++++++++++ Go to the web page. Once the page is loading, mouse to the address bar and Left-click the icon. Select Permissions. In the menu, Make sure the ones you want to use are set to Ask or Allow.

Thank you for the additional information to locate permissions on Netflix, however, that did not solve the problem I have followed your steps and shut down and reopened netflix and I still get the request to download silverlight. I have attached a screen shot showing the permissions and the site results. Thank you again.

Hmm. I just used this link and was told to download Silverlight. https://www.microsoft.com/getsilverlight/get-started/install/default.aspx

I did. But when I run the installer, it told me that version of Silverlight was already installed.

Here are other links you can check out; https://support.mozilla.org/kb/Using+the+Silverlight+plugin+with+Firefox

https://www.microsoft.com/en-us/Search/result.aspx?q=Silverlight

http://social.technet.microsoft.com/wiki/contents/articles/30387.silverlight-troubleshooting-installation.aspx

I checked with my Firefox ESR. Silverlight 5 (5.1.50907.0)

Make sure that DRM is enabled and that you have the Widevine plugin.

Try to toggle DRM off/on to see if that makes Firefox (re)load DRM components.

• Options/Preferences -> Content: Play DRM
• https://support.mozilla.org/en-US/kb/enable-drm

FredMcD Mozilla says version 5.1412 silverlight is the minimum that will work so that's why I installed that version. I went from 5.13. I can try and find the 5.15 version. What the problem is with direct link on microsoft is it reads my computer version and downloads the 513 because that is the last compatible version for xp. I have to download from filehorse to get newer than 5.13 versions of silverlight. I will try the link you sent me for 5.15. I did try technet troubleshooting already. Cor-el Thank you, however, If you read the OP I stated that I cannot update or download the plugin Widevine for Chrome because I'm running win xp. I will try the DRM toggle however the article support is for firefox 51 and I'm running 52. I really don't want to use chrome anyway but I tried. Thank you for your help I will try all of this tomorrow and get back to you. Netflix said they are aware that their xp customers are having this problem. Antiquated systems I suppose. I wish I could upgrade to win 10 from xp since it's free right now, but even too old version to do that.

FIXED!! Ok. I had completed FredMcD's 1st suggestion about the permissions location check box. I uploaded the screen shot previously but it cut off the permission box showing the "allow". It still wasn't working. At that point I put my computer on standby for several hours. I just got back on to check this support feed. I have not done any other troubleshooting since and I just pulled up netflix to take a better screen shot of the permissions box and voila! it's working! Solved, yet still a mystery. Thank you, group hug :)

I am glad to hear that your problem has been resolved. If you haven't already, please select the answer that solves the problem. This will help other users with similar problems find the solution more easily.

Thank you for contacting Mozilla Support.

I selected the solution answer, I didn't try the others offered so I don't know if they would help as well. I am letting Netflix know the solution that worked for me as well as the other solutions that have been offered here so that the problem can be resolved within their support center.

I love Mozilla.