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

Mulongo oyo etiyamaki na archive. Tuna motuna mosusu soki osengeli na lisalisi

Thunderbird is already running, but is not responding. The old Thunderbird process must be closed to open a new window." I don't have Thunderbird on my laptop!

  • 1 eyano
  • 1 eza na nkokoso oyo
  • 1 view
  • Eyano yasuka ya Matt

more options

I'm trying to install Thunderbird on my new laptop and I keep getting this message. There is no "old Thunderbird." I've purged all cookies. There is no program labeled Mozilla or Thunderbird on my computer. I used Thunderbird on my old laptop, but if I can't find a solution quick-time, I'll go with another mail program. Please help!

I'm trying to install Thunderbird on my new laptop and I keep getting this message. There is no "old Thunderbird." I've purged all cookies. There is no program labeled Mozilla or Thunderbird on my computer. I used Thunderbird on my old laptop, but if I can't find a solution quick-time, I'll go with another mail program. Please help!

All Replies (1)

more options

you might not have done installing, but obviously there is a process running, probably part of a failed install. Did you try rebooting to clear the memory of failed applications. It is usually a quick fix for this sort of error.