Silverlight in firefox 60.2.0 esr not working

SILVERLIGHT IN FIREFOX 60.2.0 ESR NOT WORKING ZIP FILE

I need Java in my browser, and I have reluctantly abandoned Firefox in favour of the forks Waterfox and PaleMoon, both of which which retain the NPAPI support which Java needs.Р”В«oth run Firefox plug-ins, albeit not the latest versions, and it is these that have kept me in the Firefox family, rather than switching to Chrome - having got used to them, I find it difficult to manage without TabMixPlus, All-in-One Sidebar and FireFTP, in particular. Weird that it tries to automatically update, even though I've set it not to. Luckily this error message doesn't seem to appear at the start of new sessions. However, upon starting my 2nd session, it still tried to update, but gave an error something along the lines of 'update failed (failed to apply update patch)'. How can I prevent this from happening, and instead keep Firefox 52.9.0 ESR?Р”В®DIT: I fixed it by changing the update settings to 'never check for updates'. It does this even when I have set the update setting to 'ask for updates but let me choose to install' within the first session. This works fine for the first session, but in order to complete installing the latest Java, I have to close Firefox and start a new session, upon which it automatically updates to Firefox Quantum 60.2.0 ESR, which I don't want.

SILVERLIGHT IN FIREFOX 60.2.0 ESR NOT WORKING ZIP FILE

I've been doing this by taking the zip file from the archive, extracting it to my desired folder, then running firefox.exe. I am trying to download the Firefox 52.9.0 ESR (32-bit) as it can run Java as a plugin in the browser.

Silverlight in firefox 60.2.0 esr not working