Register NPAPI Plugins

i try to register an own NPAPI Plugin, but i dont found informations about that.

I know that the NPAPI on Chrome is deprecated (i will write a PPAPI Plugin later) but Chrome-Docs says that i must use a manifest.json (See https://developer.chrome.com/extensions/npapi). But how i register it?

Following i had try:

Over an BATCH-File (register.bat):

 regsvr32.exe /s "C:\Users\Bizzi\Desktop\WoRPG Plugin\npworpg\Release\npworpg.dll"
 pause

Directly in the Registry:

HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\
    [worpg.de/WoRPG]
        Description  REG_SZ   World of RPG Browser Plugin
        Path         REG_SZ   C:\Users\Bizzi\Desktop\WoRPG Plugin\npworpg\Release\npworpg.dll
        ProductName  REG_SZ   World of RPG Plug-In
        Vendor       REG_SZ   World of RPG
        Version      REG_SZ   1.0.0

        [MimeTypes]
            [application/x-worpg-launcher]
                Description  REG_SZ   World of RPG

Solution

The solution is very simple!

Be sure what the depency the browser have. If the browser an 64bit based browser, be sure that the registry entry is set:

Chrome (32bit): KEY_LOCAL_MACHINE\SOFTWARE\Google\Chrome\Extensions

Chrome (64bit): KEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Google\Chrome\Extensions

Firefox (32bit): KEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins

Firefox (64bit): KEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\MozillaPlugins

Here is a little .reg script:

Windows Registry Editor Version 5.00

; MOZILLA 32bit
[HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\@worpg.de/npworpg,version=1.0.0]
"Description"="World of RPG Browser Plugin"
"Path"="C:\\Program Files (x86)\\World of RPG\\plugins\\npworpg.dll"
"ProductName"="npworpg"
"Vendor"="World of RPG"
"Version"="1.0.0"

[HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\@worpg.de/WoRPG,version=1.0.0\MimeTypes]

[HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\@worpg.de/WoRPG,version=1.0.0\MimeTypes\application/x-worpg-launcher]
"Description"="World of RPG"

; MOZILLA 64bit
[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\MozillaPlugins\@worpg.de/npworpg,version=1.0.0]
"Description"="World of RPG Browser Plugin"
"Path"="C:\\Program Files (x86)\\World of RPG\\plugins\\npworpg.dll"
"ProductName"="npworpg"
"Vendor"="World of RPG"
"Version"="1.0.0"

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\MozillaPlugins\@worpg.de/WoRPG,version=1.0.0\MimeTypes]

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\MozillaPlugins\@worpg.de/WoRPG,version=1.0.0\MimeTypes\application/x-worpg-launcher]
"Description"="World of RPG"

; CHROME 32bit
[HKEY_LOCAL_MACHINE\SOFTWARE\Google\Chrome\Extensions\ckpknilfoflolaglllnonhhhnfhaidom]
"Path"="C:\\Program Files (x86)\\World of RPG\\plugins\\npworpg.dll"
"Version"="1.0.0"

; CHROME 64bit
[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Google\Chrome\Extensions\ckpknilfoflolaglllnonhhhnfhaidom]
"Path"="C:\\Program Files (x86)\\World of RPG\\plugins\\npworpg.dll"
"Version"="1.0.0"