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.

Avatar for Username

ابحث في الدعم

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

This thread was archived. Please ask a new question if you need help.

when i try to install adobe flash player plugin a message pops up" only a single instance of this application can run" what should i do?

  • 1 (رد واحد)
  • 5 have this problem
  • 5 views
  • آخر ردّ كتبه cor-el

sheilacolson
sheilacolson
more options

when i try to install adobe flash player plugin a message pops up "only a single instance of this application can run" what should i do?

when i try to install adobe flash player plugin a message pops up "only a single instance of this application can run" what should i do?

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Make sure that Firefox is closed and check in the Task manager that there are no hanging plugin-container processes left.