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  • How to fix incompatible Firefox Add-on

  • Many Other Tutorials That Don't Belong In Any Of The Above Sections Here.
Many Other Tutorials That Don't Belong In Any Of The Above Sections Here.
 #28610  by TheAslan
 04 Oct 2013, 16:52
This is by far the best method yet, no 3rd party Add-on required nor about:config editing.

For this tutorial I'm using LastPass Add-on which stopped working after the latest Firefox Nightly 27.0a1 update.

1. Close Firefox and navigate here:

C:\Users\#Username#\AppData\Roaming\Mozilla\Firefox\Profiles\#ProfileNumber#.default\extensions\[email protected]

2. Now search and open this file in Notepad:

install.rdf

3. Then search this:

<em:maxVersion>22.0</em:maxVersion>

4. Then replace 22.0 with 27.0a1, check following screenshot:

Image

5. Then just Save it and relaunch Firefox

6. Your previously disabled Add-on is now enabled automatically by Firefox