启动Remote Access Connection Manager服务报错

错误很奇怪,好像是vpnike.dll有问题:

Log Name:      System
Source:        RasMan
Date:          9/12/2017 10:10:10 AM
Event ID:      20063
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      cib.did.biz
Description:
Remote Access Connection Manager failed to start because the Protocol engine [vpnike.dll] failed to initialize. The system cannot find the device specified.

最后发现是某些设备丢失，用这个命令创建成功:

devcon.exe install c:\Windows\inf\netavpna.inf MS_AgileVpnMiniport 

参考:

https://community.spiceworks.com/how_to/55611-fix-broken-wan-miniports