那里似乎有相当多的相互矛盾的信息 - 尽管我从未亲自尝试过（在降级之前总是手动将 FSMO 角色移动到新的 DC）并且很想知道它是否真的如此。
作为 DCPromo 降级的一部分，该操作是否会将 FSMO 角色移动到您环境中的另一个 DC？
无法将新的 Server 2012 R2 服务器提升为现有域上的域控制器。先决条件检查失败。
Verification of prerequisites for Active Directory preparation failed.
Unable to verify whether schema master has completed a replication cycle after last reboot.
Exception: Unavailable Critical Extension. Server extended error: 8366.
Server extended message: 000020AE: SvcErr: DSID-03210384, problem 5010
(UNAVAIL_EXTENSION), data 8610
.
Adprep failed to verify whether schema master has completed a replication
cycle after last reboot.
[Status/Consequence]
The schema is not upgraded.
[User Action]
Check the log file ADPrep.log in the
C:\Windows\debug\adprep\logs\20160222090334-test directory for …active-directory domain-controller windows-server-2012-r2 dcpromo