Hi, you must have found that somewhere : Suggest you follow these if you have tried to remove it from Firefox addons page and looked in Win10 settings for a way to remove it. Please use more than 1 scanner as each uses diff tech :

• https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware

Save your Report and google each before deleting anything as do not want to delete something you need, If need help :

• https://forums.malwarebytes.com/topic/9573-im-infected-what-do-i-do-now/

Post in only 1 forum, then wait.

Please let us know if this solved your issue or if need further assistance.

Micky1011 said

How do I disable "AddonBrowser"

What Extensions do you have installed in Addons manager in Firefox as perhaps one of them is doing this.

It may be related to one of the extensions listed on https://addonbrowser.com/ in which the Firefox web browser and Mozilla has no involvement with.