This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

How do I get my Address Book addresses back after having installed Windows 10?

  • 2
  • 1 nwere nsogbu anwere nsogbu a
  • 7 views
  • Nzaghachi ikpeazụ nke sugarwhale

more options

With difficulty, I finally installed Windows 10. I had the Thunderbird email program on Windows 8.1 before starting the Win 10 installation. My Thunderbird is now installed, but I lost all of the email addresses in my address book. I also lost emails that I had recently sent. Happily, my email Inbox was intact. Is there any way I can retrieve all of my old email addresses in my address book? This may not be possible. If it is possible, I would appreciate clear instructions in doing so. Thank you so much.

With difficulty, I finally installed Windows 10. I had the Thunderbird email program on Windows 8.1 before starting the Win 10 installation. My Thunderbird is now installed, but I lost all of the email addresses in my address book. I also lost emails that I had recently sent. Happily, my email Inbox was intact. Is there any way I can retrieve all of my old email addresses in my address book? This may not be possible. If it is possible, I would appreciate clear instructions in doing so. Thank you so much.

All Replies (2)

more options

The information you are missing is stored in a set of folders known as your profile. If you didn't know this, or if your data backup procedures didn't include these folders then it is gone.

The default settings in Windows tools that offer to backup data seem to take a somewhat cavalier attitude. Microsoft advise software authors to use specific locations and then fail to include these same locations in their data backup utilities.

Anyhow, this article explains the profile and where to find it. Maybe you do have a copy available somewhere.

https://support.mozilla.org/en-US/kb/profiles-tb

more options

I found my profile readily. Unfortunately, I think my old address book is gone forever. I just wanted to say "Thank you," Zenos!