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!

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

Firefox and Thunderbird both won't start anymore

  • 1 پاسخ
  • 1 has this problem
  • 1 view
  • آخرین پاسخ توسّط FredMcD

more options

First Firefox gave "already active, shut down old process to open new window" error, nothing helped, tried deleting and installing new version, but then it cannot find profile. Tried Profile manager but error message when trying to save a new profile. Appdata/roaming/ has no Mozilla Folder. Now Thunderbird gives the same "already active" error message. HELP!

First Firefox gave "already active, shut down old process to open new window" error, nothing helped, tried deleting and installing new version, but then it cannot find profile. Tried Profile manager but error message when trying to save a new profile. Appdata/roaming/ has no Mozilla Folder. Now Thunderbird gives the same "already active" error message. HELP!

All Replies (1)

more options