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

why does "checking compatibility of addons" come up each time I turn on Firefox?

  • 2 cavab
  • 3 have this problem
  • 6 views
  • Last reply by cor-el

more options

Each time I turn on Firefox a box comes up with "checking compatibility of addons".

Each time I turn on Firefox a box comes up with "checking compatibility of addons".

All Replies (2)

more options

Hi, You can update Firefox, with version 10 most add-ons are compatible, making the check unnecessary in many cases.

This might also be helpful: How to fix Firefox has just updated tab shows each time you start Firefox

Do you have the BitDefender toolbar in Firefox? Especially its version 2.0? Because this kind of issue may be related to BD Toolbar. If yes, remove it from your computer or upgrade BD.

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, extensions.cache) 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 side of the Search Bar (or click the "Find Updates" button in older Firefox versions) to do a compatibility check or see if there is a compatibility update available.


See also: