Az oldal korlátolt funkcionalitással fog rendelkezni, amíg elvégezzük a felhasználói élményt javító karbantartást. Ha egy leírás nem oldja meg a problémáját, és kérdést tenne fel, akkor a támogatási közösségünk a @FirefoxSupport Twitter oldalon tud segíteni, vagy az /r/firefox oldalon a Redditen.

Avatar for Username

Támogatás keresése

Kerülje el a támogatási csalásokat. Sosem kérjük arra, hogy hívjon fel egy telefonszámot vagy osszon meg személyes információkat. Jelentse a gyanús tevékenységeket a „Visszaélés bejelentése” lehetőséggel.

További tudnivalók

A témacsoportot lezárták és archiválták. Tegyen fel új kérdést, ha segítségre van szüksége.

After downloading and starting Firefox, I get an error message that says "A copy of Firefox is already open. only one copy of Firefox can be open at a time." The thing is I don't have another copy open.

  • 4 válasz
  • 1 embernek van ilyen problémája
  • 55 megtekintés
  • Utolsó üzenet ettől: aurolyn2

krich377
krich377
more options

After downloading and starting Firefox, I get an error message that says "A copy of Firefox is already open. only one copy of Firefox can be open at a time." The thing is I don't have another copy running.

After downloading and starting Firefox, I get an error message that says "A copy of Firefox is already open. only one copy of Firefox can be open at a time." The thing is I don't have another copy running.
Csatolt képernyőmentések

Kiválasztott megoldás

Does Firefox appear in the App Switcher? If you hold down the Command key and then press and release the Tab key, MacOS should display a bar of running programs that you can switch to by pressing Tab additional times. Is Firefox listed?

If Firefox is listed, if you keep the Command key pressed and press Tab enough times to select it, and then release both the Tab and Command keys, in theory, Firefox should be made the active application.

Does anything appear to happen on the screen?

If not, is there any possibility that Firefox is open on a different display? Obviously only applicable if you use (or have used) multiple displays.

Válasz olvasása eredeti szövegkörnyezetben 👍 1

Összes válasz (4)

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 10 Contributor
more options

Kiválasztott megoldás

Does Firefox appear in the App Switcher? If you hold down the Command key and then press and release the Tab key, MacOS should display a bar of running programs that you can switch to by pressing Tab additional times. Is Firefox listed?

If Firefox is listed, if you keep the Command key pressed and press Tab enough times to select it, and then release both the Tab and Command keys, in theory, Firefox should be made the active application.

Does anything appear to happen on the screen?

If not, is there any possibility that Firefox is open on a different display? Obviously only applicable if you use (or have used) multiple displays.

krich377
krich377 Kérdés tulajdonosa
more options

I finally just reinstalled Firefox, and things seem to have stabilized. Thanks for the tip on the running programs!

Émile Jetzer
Émile Jetzer
more options

I have had the same problem appear twice, and found the linked solution to work in both cases: https://osxdaily.com/2010/05/16/fix-for-close-firefox-a-copy-of-firefox-is-already-open-error/

Doesn't require a reinstall, but basic knowledge of Terminal and Mac OS file structure.

aurolyn2
aurolyn2
more options

I have this same problem -- Firefox is not running in the app switcher (or on another display), and I tried deleting and re-installing it. Tried going into the Terminal to run Emile's solution but i don't really know enough to make it work. Any other suggestions?