Every version of kontakt, old or new, portable or regular. Just freees on opening. Not always but most often. Even if there are no libraries installed, even if it's uninstalled and the registries are cleared. Windows is not adjusted in any way and has all the redistributables. There are no viruses and i'm running samsung 990 pro ssd's. This has never happened before in all my years of using kontakt. There are no errors or crashes, happens in every daw. Happens even if i use other disks.

 

Did you have a working installation on the machine when this happened? Or did you notice this after going to reinstall it after some period of time? What Windows version? Did you try any standalone version of Kontakt yet? (not in any DAW). You might want to pick and mention one specific release you want to use, so you are not dealing with generalities.

 

You could try what is written as the last post here:
it should say sfc /scannow (not scf)
https://community.native-instruments.com/discussion/9848/kontakt-6-7-1-freezes-on-windows-10