Simple tool to increase count on a KMS server –  KMS Client
Open CMD and run the commands:
“KMS Client.exe” 1688 127.0.0.1 Windows – Increasing count on 127.0.0.1 port 1688 on Windows’ counter
“KMS Client.exe” 1688 127.0.0.1 Office2010 – Increasing count on 127.0.0.1 port 1688 on Office 2010 counter
“KMS Client.exe” 12345 192.168.2.2 Office2013 – Increasing count on 192.168.2.2 port 12345 on Office 2013 counter