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

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

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

Upgrade to 78.4.1 [win10]

  • 3 replies
  • 1 has this problem
  • 6 views
  • Last reply by Wayne Mery

ablackburn
ablackburn
more options

My Thunderbird just upgraded to 78.4.1 and is now unusable. It is slow to load and move around, email messages don't load, I have to run my cursor over the menus to get them to appear. I have Windows 10 and exceed all of the recommended memory and system requirements. How do I either fix this or revert back to an earlier version that is usable?

My Thunderbird just upgraded to 78.4.1 and is now unusable. It is slow to load and move around, email messages don't load, I have to run my cursor over the menus to get them to appear. I have Windows 10 and exceed all of the recommended memory and system requirements. How do I either fix this or revert back to an earlier version that is usable?

Modified by Wayne Mery

All Replies (3)

Wayne Mery
Wayne Mery
  • Moderator
  • Top 10 Contributor
more options

What is the amount of memory? How much CPU?

ablackburn
ablackburn Question owner
more options

Wayne Mery said
What is the amount of memory? How much CPU?

8 GB RAM 3.50 GHz

Wayne Mery
Wayne Mery
  • Moderator
  • Top 10 Contributor
more options

How much of each is Thunderbird using? (memory amount / CPU percentage)