Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

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 not responding when opening YouTube

  • 4 cavab
  • 45 have this problem
  • 20 views
  • Last reply by MrToonster

more options

When I open YouTube in Firefox when I am not signed in it works well. But when I am signed in when I try to watch a YouTube video it stops responding. I upgraded Firefox to 40.0.3, didn't work. I am running Windows 10.

When I open YouTube in Firefox when I am not signed in it works well. But when I am signed in when I try to watch a YouTube video it stops responding. I upgraded Firefox to 40.0.3, didn't work. I am running Windows 10.

All Replies (4)

more options

The version I had before this version I have now is 37 (I think?).

more options

clean your cookies, temp and prefetch.

more options

Ashish Mishra said

clean your cookies, temp and prefetch.

I removed the individual cookie for YouTube but I have the same problem. I think I need a more detailed way on how to fix this

more options

I tried what you said and it didn't work