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

Moved profile, TB wont start get "Your Thunderbird profile cannot be loaded. It may be missing or inaccessible.

  • 1 reply
  • 4 have this problem
  • 7 views
  • Last reply by Matt

more options

Copied profile folder from old win10 computer to new. Installed TB and tried to run it. It would not start apparently due to "Your Thunderbird profile cannot be loaded. It may be missing or inaccessible." Tried reinstalling with same result. Without being able to start thunderbird, how do I find where to place the profile contents and in what profile folder name ?

Copied profile folder from old win10 computer to new. Installed TB and tried to run it. It would not start apparently due to "Your Thunderbird profile cannot be loaded. It may be missing or inaccessible." Tried reinstalling with same result. Without being able to start thunderbird, how do I find where to place the profile contents and in what profile folder name ?

All Replies (1)

more options

+ R In the run box type %appdata%\Thunderbird\profiles.ini Press enter.

Take notice of the paths to the default profile. Note that they are usually relative to the location of the file.. so profile are in a sub folder of the one profile.ini is in.