Thunderbird 78.7.1 released with CardDAV improvements

Thunderbird 78.7.1 is now available; the new stable version of the email client includes fixes, CardDAV improvements, and a change that affects extensions that use legacy APIs.
Thunderbird 78.7.1 can be downloaded from the official project website or installed via the email client's automatic updating functionality. Select Help > About Thunderbird to make use of the latter (may need to press the Alt-key to display the menubar), or run the setup file after the download completes to upgrade the existing version to the latest.
The About Thunderbird window displays the currently installed version; use it to verify it.
The new minor version includes a single new feature, the ability to use OAuth2 and Google Contacts with CardDAV address books.
Thunderbird users can install extensions such as CardBook to add new address books using CardDav and other standards.
The official release notes provide an overview of all the changes. Noteworthy for Thunderbird users with extensions installed is that the installation of extensions that use legacy APIs is no longer allowed in the new version.
Thunderbird will no longer allow installation of addons that use legacy APIs.
The number of extensions affected by the change is unclear, and it is not clear either how already installed extensions are handled by the email client after the installation of the update; will extensions with legacy APIs be uninstalled automatically?
The release notes list five fixes for issues:
- Fix for Command-Enter not sending messages on Mac OS X devices. Thunderbird users may use Ctrl-Enter on Windows/Linux or Command-Enter on Mac to activate the send function of the email client.
- Fix for OpenPGP failing to save attachments with binary data after decryption.
- The Send message button remained activated sometimes even though it should not be.
- Global search user interface fixes, not specified.
- Theme and color fixes to "improve ease of use", also unspecified.
Now You: did you notice any issues with extensions after installation of the latest version?


You said that Outlook isn’t your main email client, so which is your main one?
I think its thunderbird
It is Mozilla Thunderbird.
Awesome! This actually solved my problem… what a stupid bug.
If this is the same bug that I’ve encountered, there may be another fix: (1) hover over open Outlook item in Taskbar, cursor up to hover over Outlook window item, and right-click; (2) this should give you Restore / Move / Size / Minimize / Maximize — choose Move or Size; (3) use your cursor keys, going arbitrarily N/S/E/W, to try to move or size the Outlook window back into view. Basically, the app behaves as though it were open in a 0x0 window, or at a location that’s offscreen, and this will frequently work to resize and/or move the window. Don’t forget to close while resized/moved, so that Outlook remembers the size/position for next time.
THANK YOU Claude!!! I could get the main window to launch but could not get any other message window to show on the desktop. You are my hero!!!!
Solved my issue! 6 years later and this is still problem…
Fantastic. Thank you. Size did the trick.
This solved my Outlook problem, too. Thank you. :)
Thank you so much, this started happening to me today and was causing big problems. You are a life saver, I hope I can help you in some way some day.
You are a god – thank you!
thanks a lot…. work like charm.. :-)
Yah…thanks Claude. I’ve been having the same problem and tried all the suggestions…your solution was the answer. It had resized itself to a 0/0 box. Cheers
Excellent post. This had me baffled even trying to accurately describe the problem. This fixed it for me.
Thank you
Thanks a lot for the article. Don’t know why it happenend, don’t know how it got fixed, but it was really annoying and now it works :-)
Thanks a lot. I was facing this issue from past 3 week. I tried everything but no resolution. The issue was happening intermittently and mainly when I was changing the display of screen ( as i use 2 monitors). The only option i had was to do system restore. But thanks to you.
I’ve been tried to sole this problem for 12hours. Your comment about changing the display of screen helped me a lot!! Thanks!!
Thank you…don’t know why this happened but your instructions helped me fix it. Running Windows 10 and office pro 2007
Great tip! Thanks!
Worked for me, too – thank you!!!
It’s Worked for me, too
thank you very much!
I had a similar issue with Outlook 2013 on Windows 10 and this helped me to fix it. Thank you very much!
Thank you so much. Solved!
Considering you published this in 2012, incredible not been debugged by Microsoft.
Thank you again. M
This problem was faced by only one user logging to TS 2008 r2 using outlook 2010.The issue was resolved.
Thanks.
Great tip. Thank you!!!! If it helps, I had to use the Control Key and the arrow keys at the same time to bring my window back into view. Worked like a charm.
Thank you, this worked !!!!
Man, you are a fucking god. Thanks a lot, what an annoying bug!!
Awesome, this post solved the issue. Many thanks!