从vCenter 5.5升级到6.0？然后，您可能在安装过程中遇到了以下问题：

The range of ephemeral TCP ports on this system is 1025 to 65534. This range of ports is too large and the system must be reconfigured to use a smaller ephemeral port range before the install can continue.
We recommend using the default range of 49152 to 65535 (For example, by running the command "netsh.exe int ipv4 set dynamicportrange tcp 49152 16384";

和/或者：

Installation of component VCSServiceManager failed with error code '1603'

显然，VMware发现临时端口的范围太大。
您可以按照以下步骤轻松将其缩小到建议值。

以提升的权限打开命令提示符(以管理员身份运行...)，然后输入以下命令：

netsh interface ipv4 set dynamicportrange protocol=tcp startport=49152 numberofports=16384

您应该获得一个简单的"确定"输出，然后可以尝试按下一步或者再次启动升级向导。