A few of our security-sensitive customers have asked for https support for archive.nimsoft.com as they are unable to allow non-secure traffic to and from their network.
Per support, currently, archive.nimsoft.com is hardcoded in the source code to work with http port only.
There was a discussion about moving away from archive.nimsoft.com and rebrand this repository URL.
A suggestion would be to provide an option somewhere in the UIM configure to archive repository URL and protocol. As a pre-requisite, It would require HTTP/s support on IIS server which is hosting archive.nimsoft.com. This would provide flexibility for the customer to use either HTTP or HTTPS port to download the probe packages.