BUG #18008: SSL certificate error for Stackbuilder 4.2.1

The following bug has been logged on the website:

Bug reference:      18008
Logged by:          ian crook
Email address:      ian@isa-software.com
PostgreSQL version: 14.8
Operating system:   windows server
Description:

When attempting to install the postgis extensions using stack builder 4.2.1
in both versions 14.8 and 15.2 I get a certificate verification problem
whilst accessing
https://ftp.postgresql.org/pub/postgos/pg14/v3.3.3/win64/postgis-bundel-pg14x64-setup-3.3.3-1.exe

The error message suggests that your SSL certificates are no valid (I am not
using any windows firewall etc) and returns SEC_E_ILLEGAL-MESSAGE
(0x80090326) and the URL is not accesible. 
Please advise...
Thanks
Ian Crook