having plugin issue with firefox and want to nuke to reinstall..but how .

I have a plugin for a DVR security camera .. on one install of Firefox going to x.x.x.x. brings up an request to install a plugin ...asks for permission and if you allow everything is fine .

second  browser had plugin but no longer works ..no matter what j do ..when type x.x.x.x.  you get x.x.x.x\cnc_plugin.HTML. and a blank page ... or I get. request to install speco.  which does nothing ..
I reinstalled Firefox ..nothing ..
renamed the directories under %appdata % Mozilla ..Nada ..
how do I completeo nuke Firefox so I can reinstall and get it to ask to install the plugin against. ?? I need every trace. gone .
Andre PAsked:
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RaminTechnical AdvisorCommented:
you can Restore your computer to an earlier state when plugin was not installed.
 Restart Windows and just before the Windows logo appears  press and Hold f8 Key on Keyboard. If you missed, restart it again. Select Repair Your Computer  and Enter.  select "en" for English and then in next menu select Admin and type Admin Password, then go to System Recovery Options, then select System Restore, then select the date that the computer was Okay and let it to do the rest.
plugins can be installed either where you looked or in program files. if you already remove appdata or changed profile, you should move to the installation directory. afaik plugins do not reappear from registry keys.

you might as well be able to type "about:plugins" in the address bar or possibly use tools/add-ons and just nuke or disable that plugin alone which is simpler if feasible
John TsioumprisSoftware & Systems EngineerCommented:
I guess that the plugin is not FireFox specific so you could try another Browser like Opera
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dbruntonQuid, Me Anxius Sum?  Illegitimi non carborundum.Commented:
Uninstall Firefox.  That should clear Firefox but the plugin will be in the old APPDATA folder.

Install Firefox and it should create a new profile for you and you can try the plugin install again.  The new profile will know nothing about the old APPDATA folder.  Try an older version of Firefox because the newer versions are NOT compatible with older plugins.
Sudeep SharmaTechnical DesignerCommented:
Could you please share the plugin which is not getting installed?

Also which version of Firefox are you using.

Andre PAuthor Commented:
how do I get older version of Firefox ? I thought they self update
Andre PAuthor Commented:
the plugin is a speco plugin for a DVR camera security system
dbruntonQuid, Me Anxius Sum?  Illegitimi non carborundum.Commented:
>>  how do I get older version of Firefox ? I thought they self update

They do.  But if an old version works you could then try PaleMoon  https://www.palemoon.org/ which won't be going the new way.

Old versions can be found here http://filehippo.com/download_firefox/history/ and try a version 48 or 47 (non-beta).

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nice input !
those interested in official firefox releases might also want to look in here :
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