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.
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.