Firefox Addon update issues should be directed to the Addon Developer so they will update their Addon to work with latest Browser versions. Firefox by default will update itself it can be paused but will update for security reasons. If you want to change this update settings it's not part of Firefox browser settings-this is something one has to look online and do at their own "risk" as updates to Browsers are for security reason and stopping such updates can lead to security hacks.

For more context: https://support.mozilla.org/questions/1411087

Since the program is no longer supported by the vendor, it is difficult to get an explanation of why it stopped working (or an official fix). For example, is it related to Accessibility settings or change to how that access works?

Also, you mentioned in a different thread that Instaverse didn't work with 64-bit Firefox even in older versions. Are you installing the 32-bit versions of Firefox updates? It may be difficult to tell without checking the Help > About dialog -- but that also triggers an update...

If you need to get your own installer, the download page at https://www.mozilla.org/en-US/firefox/all/#product-desktop-release lets you change to "Windows 32-bit".

Maybe check the about:third-party page.

• https://support.mozilla.org/en-US/kb/identify-problems-third-party-modules-firefox-windows

Note that the troubleshooting information in the older thread shows a 32-bit (x86) InstaVerse.exe instantiator under the Accessibility heading.

Accessibility:
isActive: TRUE
forceDisabled: 0
handlerUsed: TRUE
instantiator: UNKNOWN|C: \\Program Files (x86)\\InstaVerse\\InstaVerse.exe

• https://support.mozilla.org/en-US/kb/accessibility-services