Due to Mozilla skipping the 17.0.1esr branch for Thunderbird, automatic updates to this version will not work at this time. Users have two options, download and manually install Thunderbird 17.0.2esr over 17.0.0esr or wait until February 19th when Thunderbird 17.0.3esr will be released with a patch to address this update issue.
Note: This does not affect the regular (non-organization) version of Thunderbird. User can auto-update from Thunderbird 17.0.0 to 17.0.2 via Help > About Thunderbird and clicking the Check for updates button.
