After KMS Nano v21, on 06th Feb, 2013 it's new version KMS Nano v23 was released. Like it's previous versions, KMS Nano v23 also activates windows 8 and MS Office 2013 silently and in a single click, but this time, it will not activate windows 7.
To run it, you must install DotNet 4.0 in your pc.

Installation:
1. Double-click on KMSnano.exe.
2. Wait for the files to decompress.
3. Wait for activation process to finish.
4. Done.