Open VPN连接远程环境报如下错误：
Sat Apr 06 07:38:58 2019 ERROR: Windows route add command failed [adaptive]: returned error code 1
Sat Apr 06 07:38:58 2019 C:\WINDOWS\system32\route.exe ADD 172.16.1.0 MASK 255.255.255.0 172.16.1.5
Sat Apr 06 07:38:58 2019 ROUTE: route addition failed using CreateIpForwardEntry: 拒绝访问。 [status=5 if_index=12]
Sat Apr 06 07:38:58 2019 Route addition via IPAPI failed [adaptive]
Sat Apr 06 07:38:58 2019 Route addition fallback to route.exe
Sat Apr 06 07:38:58 2019 env_block: add PATH=C:\WINDOWS\System32;C:\WINDOWS;C:\WINDOWS\System32\Wbem
Sat Apr 06 07:38:58 2019 ERROR: Windows route add command failed [adaptive]: returned error code 1
Sat Apr 06 07:38:58 2019 Initialization Sequence Completed
Sat Apr 06 07:38:58 2019 MANAGEMENT: >STATE:1554507538,CONNECTED,SUCCESS,172.16.1.6,1.1.1.1,4396,192.168.0.8,59294重点是：ERROR: Windows route add command failed [adaptive]: returned error code 1
解答：
此问题原因是在windows主机上该应用没有权限去创建路由表。
所以在启动运行时，我们需要指定以管理员身份去运行OpenVPN GUI.