What site are you downloading from?

I am in Safari and going to Mozalla firebox to down load for a MacBook Pro, I get error message no profile.

Are you getting this message during the download, or when you start Firefox?

http://kb.mozillazine.org/Profile_folder_-_Firefox#Navigating_to_the_profile_folder

https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles

https://support.mozilla.org/en-US/kb/how-run-firefox-when-profile-missing-inaccessible

https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

When I start Firefox.

Check the links I posted.

Create a New Profile 2nd URL Fred provided. https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles TEST Look on your Desktop for a Folder called OldFirefoxProfile If is

• https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile
• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

if not : uninstall Firefox and then Reinstall with Current Release Firefox 59.0.1 with a Full Version Installer

• https://www.mozilla.org/firefox/all/

Please let us know if this solved your issue or if need further assistance.

I have MacOS High Sierra Version 10.13.3. Could this be why I can not download Firefox.

That should not make any difference, as long as you download the installer for your system from;

Download Firefox For All languages And Systems {web link}

'Can I send you a screen shot of what I am getting when I try and download?

/Users/frank/Desktop/Screen Shot 2018-03-17 at 9.59.20 PM.png/Users/frank/Desktop/Screen Shot 2018-03-17 at 10.17.25 PM.png

Nookie44 said

/Users/frank/Desktop/Screen Shot 2018-03-17 at 9.59.20 PM.png/Users/frank/Desktop/Screen Shot 2018-03-17 at 10.17.25 PM.png

Hi, Need to attach the screenshot.

You may need to use another browser to go to the URL to download it. https://www.mozilla.org/firefox/all/ If can not download with any browsers please try getting this and run it. https://www.malwarebytes.com/mac/ and if can not download that you need to go to a friends and download to USB

In order to better assist you with your issue please provide us with a screenshot. If you need help to create a screenshot, please see How do I create a screenshot of my problem?

Once you've done this, attach the saved screenshot file to your forum post by clicking the Browse... button below the Post your reply box. This will help us to visualize the problem.

Thank you!