![78.1.0, Now my calendar is empty. And if I restart thunderbird: thunderbird is still running | Thunderbird-stipefoarum | Mozilla Support 78.1.0, Now my calendar is empty. And if I restart thunderbird: thunderbird is still running | Thunderbird-stipefoarum | Mozilla Support](https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2020-08-04-22-04-57-757da3.png)
78.1.0, Now my calendar is empty. And if I restart thunderbird: thunderbird is still running | Thunderbird-stipefoarum | Mozilla Support
![Every time I open Thunderbird, I get a message that Thunderbird is already running....and I get the troubleshooting tab in Thunderbird. | Thunderbird Jukwaa la msaada | Mozilla Support Every time I open Thunderbird, I get a message that Thunderbird is already running....and I get the troubleshooting tab in Thunderbird. | Thunderbird Jukwaa la msaada | Mozilla Support](https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2017-02-05-14-24-22-529cf6.png)
Every time I open Thunderbird, I get a message that Thunderbird is already running....and I get the troubleshooting tab in Thunderbird. | Thunderbird Jukwaa la msaada | Mozilla Support
![Thunderbird not displaying folders correctly after update 38 | Thunderbird Support Forum | Mozilla Support Thunderbird not displaying folders correctly after update 38 | Thunderbird Support Forum | Mozilla Support](https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2016-02-28-14-23-43-72d296.png)
Thunderbird not displaying folders correctly after update 38 | Thunderbird Support Forum | Mozilla Support
![Thunderbird is already running" error every time I try to start Thunderbird, even if it is not... - YouTube Thunderbird is already running" error every time I try to start Thunderbird, even if it is not... - YouTube](https://i.ytimg.com/vi/vE9ZJ26Zd5I/mqdefault.jpg)
Thunderbird is already running" error every time I try to start Thunderbird, even if it is not... - YouTube
Wayland version] "already running, but is not responding" error when I try to send a link from Firefox · Issue #109 · flathub/org.mozilla.Thunderbird · GitHub
![Firefox and Thunderbird do not communicate anymore : I can't open links from TB emails (<a href...>) and can't send mail from FF pages (mailto) | Firefox Support Forum | Mozilla Support Firefox and Thunderbird do not communicate anymore : I can't open links from TB emails (<a href...>) and can't send mail from FF pages (mailto) | Firefox Support Forum | Mozilla Support](https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2014-08-26-02-02-29-44a50f.png)
Firefox and Thunderbird do not communicate anymore : I can't open links from TB emails (<a href...>) and can't send mail from FF pages (mailto) | Firefox Support Forum | Mozilla Support
![Old Thunderbird installations will be upgraded to Thunderbird 91 via automatic updates now - gHacks Tech News Old Thunderbird installations will be upgraded to Thunderbird 91 via automatic updates now - gHacks Tech News](https://www.ghacks.net/wp-content/uploads/2021/10/thunderbird-disable-automatic-updates.png)