Join the Mozilla’s Test Days event from Dec 2–8 to test the new Firefox address bar on Firefox Beta 134 and get a chance to win Mozilla swag vouchers! 🎁

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 starting too many instances when launched

  • 1 reply
  • 1 has this problem
  • 2 views
  • Last reply by TyDraniu

more options

Every time I launch Firefox it creates 12-13 instances of Firefox along with one each for Chrome and Console.

I don't need that many instances. Typically I have no more than 3-4 tabs open.

Is there a Configuration setting that I can change to reduce the number of instances to 5 and greatly reduce the amount of time it takes to launch.

I am running Windows 10 Pro V21H2 at current update level. I have a custom made tower with 512GB SSD and a Core2 Duo processing running at 2.93 GHz with 8 GB Ram. Firefox is V17.0.1.

Every time I launch Firefox it creates 12-13 instances of Firefox along with one each for Chrome and Console. I don't need that many instances. Typically I have no more than 3-4 tabs open. Is there a Configuration setting that I can change to reduce the number of instances to 5 and greatly reduce the amount of time it takes to launch. I am running Windows 10 Pro V21H2 at current update level. I have a custom made tower with 512GB SSD and a Core2 Duo processing running at 2.93 GHz with 8 GB Ram. Firefox is V17.0.1.
Attached screenshots

All Replies (1)

more options

These are not instances, but processes. For instance network process, gpu process, and so on. You need them all.