Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

Natao arisiva ity resaka mitohy ity. Mametraha fanontaniana azafady raha mila fanampiana.

Can't start Firefox, gives me "Your Firefox Profile cannot be loaded"

  • 6 valiny
  • 1 manana an'ity olana ity
  • 3 views
  • Valiny farany nomen'i alicebmeade

more options

When I tried to open Firefox this morning, I received the message: Your Firefox profile cannot be loaded. It may be missing or inaccessible. So I deleted my Profile in Library/Application Support and deleted Firefox and redownloaded the latest version. Now when I try to start Firefox, I still get this message!! I can confirm in the folder Library/Application Support there is NO Firefox folder. It is gone. Why can't I open Firefox???

When I tried to open Firefox this morning, I received the message: Your Firefox profile cannot be loaded. It may be missing or inaccessible. So I deleted my Profile in Library/Application Support and deleted Firefox and redownloaded the latest version. Now when I try to start Firefox, I still get this message!! I can confirm in the folder Library/Application Support there is NO Firefox folder. It is gone. Why can't I open Firefox???
Sarin'efijery napaingotra

Vahaolana nofidina

You can delete the Firefox folder in the Caches location a well

Hamaky an'ity valiny ity @ sehatra 👍 0

All Replies (6)

more options
more options

Thanks, I have tried all of these. I deleted the Firefox folder in Library and downloaded a new version of Firefox and it still won't load - giving me the same error. I tried using the ProfileManager app and it WON"T load giving me the SAME error message. I am at my wits end.

more options

You can check for permissions issues in both locations used by[ ] .

  • ~/Library/Application Support/Firefox/Profiles/<profile>/
  • ~/Library/Caches/Firefox/Profiles/

You can try to do some maintenance and cleanup.

more options

I deleted the Firefox folder under Application Support. What would I be looking for in the Caches/Firefox/Profile/ folder?

more options

Vahaolana Nofidina

You can delete the Firefox folder in the Caches location a well

more options

I rebooted this morning and now Firefox starts fine!