File: Kerbal.space.program.v1.11.1.03066.zip ... -

: Your Kerbals can now move and attach parts to craft while on a spacewalk.

: Find Kerbal.Space.Program.v1.11.1.03066.zip in your downloads folder. File: Kerbal.Space.Program.v1.11.1.03066.zip ...

: KSP is known for long loading screens. Installing the game on an SSD significantly improves this. : Your Kerbals can now move and attach

: Engineers can now repair broken parts (like solar panels or landing legs) in the field. 5. Troubleshooting File: Kerbal.Space.Program.v1.11.1.03066.zip ...

Since the file is a .zip archive, you do not need to "install" it in the traditional sense. It is a portable version of the game.