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

Lolu chungechunge lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.

The application “Firefox” can’t be opened.

  • 1 baphendule
  • 1 inale nkinga
  • Igcine ukuphendulwa ngu jscher2000

more options

MAC OS 10.11.4

1) when i open firefox - I get this error message - The application “Firefox” can’t be opened.

2) when I try to start firefox in safe-mode same message as above

3) when I try to run /Applications/ -P The error message back /Applications/ Operation not permitted

4) When I trash can the firefox application and reinstall firefox - get the same error message as step 1

5) when I renamed Policies folder and then start firefox same error message as in item 1 above

6) when I trash can the firefox application with profile folder rename - and install firefox same as item 1

7) when I ran step 3 - the profile manger gui came up - then went away. when I ran step 3 again- I get the error in step 3

Please advise my options - I have bookmarks and security information I need to access - I made a copy of the Profiles folder before I started this process.

thanks, dan

All Replies (1)

more options

Hi Dan, as a Windows user, I am not aware of any secret Mac magic for this problem.

Assuming this began with Firefox 66, I wonder whether you might try installing Firefox 65.0.2 and see whether it can run. It may well want to update right away, but at least we can get a little bit of information this way.

This is the link for the U.S. English version. To choose a different language, please click the .. link (first on the list) and then you will find folders for all the supported locales.