Thunderbird Release Notes

Version 38.5.1, first offered to channel users on January 8, 2016

Check out "What’s New" and "Known Issues" for this version of Thunderbird below. As always, you’re encouraged to tell us what you think, or file a bug in Bugzilla. If interested, please see the complete list of changes in this release.

What’s New

  • changed

    Use a SHA-256 signing certificate for Windows builds, to meet new signing requirements

Known Issues

  • unresolved

    Windows XP SP2 will not longer install Thunderbird (workaround: Install Thunderbird 38.5.0 then update)