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For the past few days, randomly when I open a new tab, I get one or more popup windows asking me if I want to open popup.htm.

  • 5 replies
  • 1 has this problem
  • 7 views
  • Last reply by cor-el

raebc
raebc

These do not appear to be coming from a website, but from within Firefox. Example screenshots below.

These do not appear to be coming from a website, but from within Firefox. Example screenshots below.
Attached screenshots

Modified by raebc

Chosen solution

I think it was Tab Mix Plus. Thanks!

Read this answer in context 👍 0

All Replies (5)

Eve
Eve

It looks like it's coming from an extension you have installed. What extensions do you have installed?

Kawaii Amber
Kawaii Amber

It seems to be from an extension. See if this still happens in safe mode by going to about:support and launching in safe mode. If it stops, then it would seem that a certain extension is doing this.

raebc
raebc Question owner

In safe mode. Since this is random, I'll have to wait to see if it worked. Below is another window I was getting. Forum would not allow me to load two.

raebc
raebc Question owner

Chosen Solution

I think it was Tab Mix Plus. Thanks!

cor-el
cor-el
  • Moderator

Note that if you see a moz-extension:// link that you can look on the about:debugging page (This Firefox) what extension this is about.