Microtik PPtP and Windows 2012 RADIUS

I would appreciate if somebody could give me some guidelines how to configure Microtik and Windows 2012 Server RADIUS.
I have followed number of documents and bottom line is this:
Network Policy Server denied access to a user.

Contact the Network Policy Server administrator for more information.

User:
Security ID: NULL SID
Account Name: cipol
Account Domain: -
Fully Qualified Account Name: -

Client Machine:
Security ID: NULL SID
Account Name: -
Fully Qualified Account Name: -
OS-Version: -
Called Station Identifier: xxx.xxx.xxx.xxx
Calling Station Identifier: yyy.yyy.yyy.yyy

NAS:
NAS IPv4 Address: xxx.xxx.xxx.xxx
NAS IPv6 Address: -
NAS Identifier: MikroTik
NAS Port-Type: Virtual
NAS Port: 15728775

RADIUS Client:
Client Friendly Name: MikroTik
Client IP Address: xxx.xxx.xxx.xxx

Authentication Details:
Connection Request Policy Name: -
Network Policy Name: -
Authentication Provider: -
Authentication Server: CIPOL-DC.dioklecijan.com.local
Authentication Type: -
EAP Type: -
Account Session Identifier: -
Logging Results: Accounting information was written to the local log file.
Reason Code: 49
Reason: The RADIUS request did not match any configured connection request policy (CRP).

Any help would be appreciated

Anyone? No one?