We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Search Support

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

I am not able to install or update any extension in firefox or firefox developer edition

  • 2 tontu
  • 1 am na jafe-jafe bii
  • 1 view
  • i mujjee tontu mooy cor-el

more options

I try to install some extension but there some issue I don't know about it. I try to reinstall firefox developer again this issue not solved and refreshed it and not solved. and finally install normal firefox with new profile and this issue still not solved.

I can only install extension file if I download it directly form download library and convert the file from .xpi to .zip and install it manually in add ons manager.

please let me know how to solve this error.

I try to install some extension but there some issue I don't know about it. I try to reinstall firefox developer again this issue not solved and refreshed it and not solved. and finally install normal firefox with new profile and this issue still not solved. I can only install extension file if I download it directly form download library and convert the file from .xpi to .zip and install it manually in add ons manager. please let me know how to solve this error.
Nataali seetu yiñ ci takkaale

All Replies (2)

more options

Hi Mohammed Alhendi, If you are using ESET please see this thread -

ALL extensions appear to be corrupt. https://support.mozilla.org/en-US/questions/1381931

more options

The System Details shows:

SecuritySoftware:
 registeredAntiVirus: ESET Security
 registeredAntiSpyware: 
 registeredFirewall: ESET Firewall