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

Hierdie gesprek is in die argief. Vra asseblief 'n nuwe vraag as jy hulp nodig het.

add on will not stay installed

  • 3 antwoorde
  • 4 hierdie probleem
  • 2 views
  • Laaste antwoord deur cor-el

more options

I have been having an issue with Firefox 20 not keeping add-ons installed. Namely, Ad Block Plus... it will install fine, but when I close the browser, the add-on is not installed anymore. I have to install it everytime I open the browser.

I have been having an issue with Firefox 20 not keeping add-ons installed. Namely, Ad Block Plus... it will install fine, but when I close the browser, the add-on is not installed anymore. I have to install it everytime I open the browser.

All Replies (3)

more options

Make sure your not in safemode...


Troubleshoot your Addons

more options

I'm not in safe mode.

more options

It is possible that there is a problem with the file(s) that store the extensions registry.

Delete the files extensions.* (e.g. extensions.sqlite, extensions.ini) and compatibility.ini in the Firefox profile folder to reset the extensions registry.

New files will be created when required.

See "Corrupt extension files":

If you see disabled, not compatible, extensions in "Tools > Add-ons > Extensions" then click the Tools button at the left end side of the Search Bar ("Find Updates" button in older Firefox versions) to check if there is a compatibility update available.

If this hasn't helped then also try to delete the addons.sqlite file.

Which security software (firewall, anti-virus) do you have?

Some security software has virtualization or sandbox features that may cause problems by protecting and restoring files in the Firefox profile folder.


There are other things that need your attention.

Your system details list shows that you have two Flash plugins installed:

  1. Shockwave Flash 11.7 r700
  2. Shockwave Flash 11.6 r602

You should remove the older Flash 11.6 version

See "Manually uninstalling a plugin":