Engine(s) will transition to a FATAL state or will fail to start, throwing the following error in the corresponding engine db_*.log file found in <APPIAN_HOME>/logs/:
"FATAL .a.db "bind: Only one usage of each socket address (protocol/network address/port) is normally permitted."
Windows patch KB4338823 is known to cause network port issues. This patch applies to Windows 7 Service Pack 1 and Windows Server 2008 R2 Service Pack 1.
Revert to previous Windows patch or install Windows patch KB4345459.
This article applies to all versions of Appian.
Last Reviewed: September 2018
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