Execute the following command in server A (Windows Server 2008 R2) to access the service health of remote server B (Windows Server 2003) :

sc \\servername query “servicename”

The results returned are as follows:

[SC] OpenSCManager FAILED 1722: The RPC server is unavailable.

Solution: Just restart server A. Because I really don’t know what causes it, it is OK to run the command in my native machine, but the operating system of my native machine is exactly the same as that of server A, so it should not be the setting problem of server B.

Reproduced in: https://www.cnblogs.com/yumianhu/p/3707538.html