**Firstly:** Create file **config.js**

`//`

`try {`

`Components.utils.import("resource://gre/modules/addons/XPIProvider.jsm", {})`

`.eval("SIGNED_TYPES.clear()");`

`}`

`catch(ex) {}`

You should place this file in **C:\Program Files\Mozilla Firefox** directory

 

**Secondly:** Create file **config-prefs.js**

`pref("general.config.obscure_value", 0);`

`pref("general.config.filename", "config.js");`
 

You should place this file in **C:\Program Files\Mozilla Firefox\defaults\pref**

 

**Note!!!** If it does not work for you then you should repeat it again! Maybe you need to reinstall your addons after that. Be carefully with file encoding! (UTF-8 and so on).

I am not author of this.

Source: https://forum.mozilla-russia.org/viewtopic.php?id=70326

Author: https://forum.mozilla-russia.org/viewtopic.php?pid=720004#p720004