You can try to recover prefs.js from the old profile, see the Recovering important data from an old profile article for more.

Hi David,

It may help to know a little more background information.

• Why did you reset ?
  • Exactly what problems did you have.
• And why do you now wish to go back ?
• What is it you are missing?

Hi David,

I received your message mentioning you had lost an email link to gmail after doing a reset.

The reset will not remove bookmarks but it will remove open tabs and presumably homepages. (I will test that in another profile afterwards).

• Maybe this tip helps https://plus.google.com/+Gmail/posts/88L6X7CC7sD
• This should be a suitable sign-on page https://accounts.google.com/ServiceLogin?service=mail
• Note it is often recommended not signing into email automatically or staying signed in unless the computer is in your own house.
• Bookmark or add the relevant page to your home page see
  How to set the home page

You are best using the forum for questions, more people see them, and everyone benefits from the solutions.

Clear the cache and cookies only from websites that cause problems.

"Clear the Cache":

• Firefox/Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"

"Remove Cookies" from sites causing problems:

• Firefox/Tools > Options > Privacy > Cookies: "Show Cookies"

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

• Do NOT click the Reset button on the Safe Mode start window.

• https://support.mozilla.org/kb/Safe+Mode
• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

I must not have stated my problem correctly; when my gmail is open and I read an article, for example on yahoo, and want to email the link- when I go to firefox on the top left and use "email link": I am now taken to microsoft office outlook...which I don't have! I want to go back to having the link sent by my gmail.....in other words, on firefox, when i email a link i want it sent the way it was before the reset...by gmail

Did you check the current setting for Mailto in Tools > Options > Applications?

• http://kb.mozillazine.org/File_types_and_download_actions

See:

• https://support.mozilla.org/kb/Changing+the+e-mail+program+used+by+Firefox

thank you, THANK YOU!!!