Here is proper and working release of Kontakt 4.1.1 for Windows by AiR group. Read NFO for more info about it.

Description: With version 4, KONTAKT enhances its position as the professional’s sampler of choice. Building on the outstanding features of the previous versions, including the unrivaled audio engine and state-of-the-art semi-modular architecture, KONTAKT 4 delivers new sonic horizons for your music. An expanded sound collection connects you to an immense number of instruments, and the new Authentic Expression Technology (AET) is at the cutting-edge of dynamic and true instrument simulation.

Release Name: Native.Instruments.Kontakt.VSTi.RTAS.v4.1.1.UPDATE.ONLY.WORKING-AiR
Size: 75 MB
Links: NFO, Homepage, Torrent Search

https://rlsbb.io/download.html?/dl/63186558/62aeee3/Native.Instruments.Kontakt.VSTi.RTAS.v4.1.1.UPDATE.ONLY.WORKING-AiR.rar.html

Here’s group AiR with the lastest update for “Kontakt’. Information about further updates for Kontakt 4.1.0 is currently not available.

Description:
With version 4, KONTAKT enhances its position as the professional’s sampler of choice. Building on the outstanding features of the previous versions, including the unrivaled audio engine and state-of-the-art semi-modular architecture, KONTAKT 4 delivers new sonic horizons for your music. An expanded sound collection connects you to an immense number of instruments, and the new Authentic Expression Technology (AET) is at the cutting-edge of dynamic and true instrument simulation.

Release name: Native.Instruments.Kontakt.VSTi.RTAS.v4.1.0.UPDATE.ONLY-AiR
Size: 75MB
Links: Homepage – NFO

Download: HOTFiLE