After Received updates on windows 8.1 pro. I have seen TAP-Windows Adapter V9.

In

==> Device Manger.

==> Network Adapters

==> Windows Adapter V9  << ? >>

And what for we use it..

Please let me know...

also in Scheduled Tasks these parameters appears let me what is this.. Is this harmful for my PC of any stealing informer programs ... information below as...

Yes Task KMS Server Daily Activate MDL C:\Windows\AutoKMS_VL_ALL\AutoKMS_VL_ALL.exe
Yes Task KMS Server OnLogon Activate MDL C:\Windows\AutoKMS_VL_ALL\AutoKMS_VL_ALL.exe
Yes Task Optimize Start Menu Cache Files-S-1-5-21-3002109938-3657950855-1951904461-1001  

MC

There are a couple of threads that you  may want to read.  It may be related to VM

https://social.technet.microsoft.com/Forums/en-US/e0653755-531d-45a6-8221-46e552328d8d/unwanted-tapwindows-adapter-v9-and-tapwin32-adapter-oas-drivers-installing?forum=w8itpronetworking

http://answers.microsoft.com/en-us/windows/forum/windows8_1-networking/problem-with-windows-tap-adapter-v9/ec1dd3b6-c756-4aef-b38d-d81aee42821d

Cant help you with the KMS tasks.

Hello mobilechat,

About the error message Yes Task KMS Server Daily Activate MDL C:\Windows\AutoKMS_VL_ALL\AutoKMS_VL_ALL.exe
Yes Task KMS Server OnLogon Activate MDL C:\Windows\AutoKMS_VL_ALL\AutoKMS_VL_ALL.exe
Yes Task Optimize Start Menu Cache Files-S-1-5-21-3002109938-3657950855-1951904461-1001 where do you receive it?

Please share us a screenshot about the error message.

About the TAP-Windows Adapter V9, please uninstall it.

About the KMS activation issue, please contact the Microsoft Volume Licensing Activation support.
http://www.microsoft.com/licensing/existing-customers/activation-centers.aspx

Best regards,
Fangzhou CHEN