Firefox and Adobe Flash Post 2020 and MORE
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Question: Is there a use for Adobe Flash beyond the year 2020?

Answer: YES THERE IS A USE FOR IT! So everyone with a comment: "Shhhhh..." Think about all those silly camera manufacturer that utilized Flash to display video in browsers. Oh, and it turns out Flash v54 exists as does a Chinese version in late 2023.


Install Adobe Flash 11.9 for Firefox 52.9.0 ESR on Windows 10 (and Windows 11)



A PlugIn is an 'major' external piece of software like Adobe Flash, etc., whereas an Extension is a 'minor / small' piece of software

Flash: Extracting Files from Installation File

"Extracting" all of the Adobe Flash 11.9 Files doesn't seem to be possible. There just doesn't seem to be a direct way to do this. UniExtract and other failed to extract the contents. Research indicated there might be a method, but it seems to rely on a developer version of Flash which requires a license (good luck getting that).

So how can it be done? Use a Windows XP virtual machine as a surrogate by installing Flash, locating the files, and then copying them to another machine.

Location of Adobe Flash Files after installing on Windows XP: C:\Windows\System32\Macromed\Flash


  • Install Firefox 52.9.0 (32 bit version) into a unique Folder (C:\Program Files (x86)\Mozilla - 52.9.0 ESR as a suggestion to keep it separate from a 'contemporary' / current version of Firefox)
  • Use Firefox Profile Manager to create a separate Profile for 52.9.0 ESR (again to keep it separate from the 'contemporary' / current version of Firefox): "C:\Program Files (x86)\Mozilla Firefox\firefox.exe" -p
  • Do NOT Start Firefox without disabling (renaming) the Update.exe Program in C:\Program Files\Mozilla\Firefox_WhatEverName (it can also be disabled in Options)
  • Copy extracted Adobe Flash files to (again to keep it separate from other Firefox versions): C:\%AppData%\Roaming\Mozilla\Firefox\Profiles\WhatEverPathToFirefoxeESR52.9.0Profile.Firefox CLASSIC 52.9.0 ESR\plugins
  • Start Firefox 52.9.0 ESR
    • Enable Shockwave Flash in PlugIns
    • about:config: extensions.blocklist.enable (set it to false)
    • Disable Flash Protected Mode in Options (in Tools, Addons, More (Shockwave Flash))

And it should work. If not, see items in Other Information

Other Information

  • Firefox Plugin Folder for Windows that applies to all installations of Firefox (not a good idea for Flash, so use the above recommended Profile Path):
    • For 32-bit Firefox on a 32-bit Windows OS: C:\Program Files\Mozilla Firefox\plugins
    • For 32-bit Firefox on a 64-bit Windows OS: C:\Program Files (x86)\Mozilla Firefox\plugins
  • Windows Folder where Adobe Flash leaves behind its "Deadman Switch" even after being uninstalled (this can be deleted): C:\Windows\SysWOW64\Macromed\Flash
  • Possibly search for other instances of NPSWF32_32_0_0_465.dll and delete those folders too
  • Flash Registry Locations that can be deleted
    • Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Macromedia\FlashPlayerPlugin
    • Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Macromedia\FlashPlayerPlugin
  • Flash Emulators / Substitutes that do NOT work (at least for Surveillance Cameras): Flash Player, Flash Player 2021, and Ruffle
  • Firefox Plugin Information (better to use config:support, plugins Button in Firefox): C:\%AppData%\Roaming\Mozilla\Firefox\Profiles\WhatEverProfileName\pluginreg.dat

Informational Links

Another Challenge

RTSP inside of Firefox with a VLC PlugIn? As of 09.2023, nope. Even tried on Windows XP with Firefox 27 and VLC 2.2.8. The AddIn shows up as enabled, but does not work.



Last version to include the NPAPI Plugin: VLC 2.2.8

Research indicates that a specially formatted webpage must be created to 'allow connect with' the VLC PlugIn for Firefox, as opposed to the plugin just working with an RTSP PlugIn inside a browser.