MDE Onboarding issue - 2012 R2 - CheckPPL Error

Hello, 

I am facing an onboarding issue with one specific 2012 R2 server. I've already ran MDEAnalyzer and there's an error message: "112004 CheckPPL Please note the sensor on this device is not PPL protected: SERVICE sense PROTECTION LEVEL: NONE.. ". Event viewer logs for Sense service contains multiple warning events ID 65 "Failed to load Microsoft Security Events Component Minifilter driver. Failure code: 0x80070005". Server's status in MDE is "can be onboarded". 
Any suggestions will be highly appreciated!