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 possible cause of failure.
当前域有一个 Server 2008 R2 域控制器，域功能级别设置为 Server 2008 R2。
尝试检索林功能级别时，遇到错误“从服务器返回了引用”。
答案1
由于不再存在的旧域控制器复制失败而导致的问题。
需要删除孤立的域控制器和域。我使用了以下指南：
https://support.microsoft.com/en-us/kb/251307