Before every Openfire release, Java JRE should be updated to the latest version (unless it was just released a few days ago, then i think previous to last version should be fine). After closing this ticket, file another, for the next release (clone this ticket).
1.8.0_181 is already available in install4j.
updated master and 4.2 branch to 1.8.0u181
1.8.0u192 is available in install4j (for some reason not 191).
updated master and 4.2 branch to 1.8.0u192
hopefully no more JRE updates prior to the full release of Openfire 4.3.0!