After upgrading SCM Server to version 12.6, the SCM 12.1 SP3 Workbench is unable to connect to it.
SCM 12.6 Server, all platforms
We checked the HServer.arg file and found the “-enforcepatchversion=1” option was set. This is an option that enforces the client and server to be at the same patch level.
Release: SCMNCR99000-12.5-Harvest-Software Change Manager-Named User-Competitive Replacem