More often than not, if you are installing or upgrading or downgrading kubectl for Windows or Linux, then during download you might face following error:

$ curl -O https://s3.us-west-2.amazonaws.com/amazon-eks/1.23.13/2022-10-31/bin/windows/amd64/kubectl.exe

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current

                                 Dload  Upload   Total   Spent    Left  Speed

  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0

curl: (60) SSL certificate problem: self signed certificate in certificate chain

More details here: https://curl.haxx.se/docs/sslcerts.html

curl failed to verify the legitimacy of the server and therefore could not

establish a secure connection to it. To learn more about this situation and

how to fix it, please visit the web page mentioned above.

Solution:

The solution to above error is to use the curl command with --ssl-no-revoke flag as follows:

curl -O https://s3.us-west-2.amazonaws.com/amazon-eks/1.23.13/2022-10-31/bin/windows/amd64/kubectl.exe --ssl-no-revoke

and it would work.

I hope that helps.