This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

ابحث في الدعم

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

How to prevent KIS from adding its extension to the browser?

  • 7 ردود
  • 2 have this problem
  • 2 views
  • آخر ردّ كتبه Neo

more options

Firefox allows to add extensions from third-party programs like KIS. These extensions do not have a delete button. How to disable this behavior?

Firefox allows to add extensions from third-party programs like KIS. These extensions do not have a delete button. How to disable this behavior?

Modified by user1590871

All Replies (7)

more options

Extensions that do not have a "Remove" button are installed globally by other software and are not under control of the Firefox extension manager. Globally installed extensions are usually found via a registry scan or are installed in a location that Firefox scans for installed extensions. You will have to contact Kaspersky if you have a problem with their software.

You can find the install location of a specific extension in the extensions.json file in the profile folder. You can open the extensions.json file in a Firefox tab or in the Scratchpad (Web Developer) and search for this extension. The path field list its install location.

You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page.

more options

How can I forbid to install extensions globally? KIS support doesn't help. All what they say: "You can disable extension. Why do you want to delete it?"

Modified by Neo

more options

Neo. said

How can I forbid to install extensions globally? KIS support doesn't help. All what they say: "You can disable extension. Why do you want to delete it?"

Firefox will discover extensions installed in various shared folders and listed in the Windows registry. I don't know whether there is a way to narrow Firefox's gaze to your currently active profile. If you like, you can delete the KIS extension from wherever it was placed by KIS. Do you need tips on locating it? Try the method described in this thread (adapted to the name of the extension you're looking for): Delete legacy extension that has no remove button

more options

Ijscher2000 said

Firefox will discover extensions installed in various shared folders and listed in the Windows registry.

I know that extension is placed here: "C:\Program Files (x86)\Kaspersky Lab\Kaspersky Internet Security 19.0.0\FFExt\light_plugin_firefox\"

How can I forbid firefox discover extensions from folders placed not in my profile?

Modified by Neo

more options

You should be able to disable these third-party extensions in the Add-ons manager although you can't remove them. You would have to remove the Windows Registry keys that Firefox scans, but it is likely that KIS will restore these key.

You can also try to remove the extension(s) from their installation folder.

more options

Thanks for the help. I deleted the extension files in the light_plugin_firefox directory and change the NTFS rights on the directory. I did the same with the registry directory HKLM\SOFTWARE\Mozilla\Firefox\Extensions & HKLM\SOFTWARE\WOW6432Node\Mozilla\Firefox\Extensions.