Thunderbird 78.1

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  1. X-Thunderbird 78.1.1 rev10 add to watchlist send us an update. 25 screenshots: runs on: Windows 10 32/64 bit Windows 2003 Windows 8 32/64 bit Windows 7 32/64 bit Windows Vista.
  2. Thunderbird version 78.1.1 is only offered as direct download from thunderbird.net and not as an upgrade from Thunderbird version 68 or earlier. A future release will provide updates from earlier versions. Automatic updates are available for users already running version 78.0 or higher.
I know a pinned topic says to avoid Thunderbird 78 until 78.2 is eventually released, but my copy unfortunately updated before I saw that... and of course, I lost all of my extensions and their associated capabilities.

Thunderbird version 78.1.1 is only offered as direct download from thunderbird.net and not as an upgrade from Thunderbird version 68 or earlier. A future release will provide updates from earlier versions. Automatic updates are available for users already running version 78.0 or higher. Thunderbird is a powerful mail client arriving to our computers totally free. If you decide to use Thunderbird, you can send and receive emails, with intelligent spam filters, quick message search, and customizable views. Thunderbird supports IMAP and POP mail protocols, as well as HTML mail format.


PortableThunderbird 78.1Along with that, though, Thunderbird has been randomly freezing on me. It doesn't seem to correlate with any specific action I take. It can happen when it's in the background or when I'm trying to switch from reading one message to another. Since it periodically checks my accounts in the background using multiple timers, I don't have an easy way of knowing if the freezing corresponds with calls to one of my IMAP servers or RSS feeds. When it freezes, it goes into a 'Not Responding' state, no aspect of the UI will respond, and it appears to completely max out one logical core/thread on my CPU. It'll stay there for somewhere on the order of half a minute to a full minute, and then it'll resume working normally, as if nothing happened. I've noticed the freezes multiple times every day, seemingly at random, but thankfully, it's not something that happens every few minutes (i.e. it definitely doesn't happen with every IMAP server call)
Thunderbird 78.1 portableThunderbird 78.1

Thunderbird 78.1.1

This has persisted across multiple versions of 78.0 and continues in 78.1.0. I've looked around, and I'm not seeing other reports of this. Does anyone have ideas on how I can troubleshoot this to determine what is causing it, and hopefully to resolve it?

Thunderbird 78.5.1

I've been using Thunderbird for many years, and I don't recall it ever behaving like this. I can at least say with certainty that pre-78 versions have not behaved this way for me in the last few years.

Thunderbird 78.1.1 Google Calendar

Note: As others have mentioned, I found that Thunderbird didn't actually deactivate all of my incompatible extensions. I disabled the remaining extensions manually, in hopes that it would resolve this problem, but it did not. The only

Mozilla Thunderbird 78.1.1 Download

extension I have enabled is 'Display Mail User Agent T,' which is a fork of 'Display Mail User Agent,' updated in late July for Thunderbird 78.