Here goes the new release 3.10.1 and why it took longer than expected to fix this annoying issue.
Because of a small bug in the installer, user that were using the “customer” version of VC Redist where prompted with a message asking them to redownload VC Redist. The problem was deeper than this because the link to auto-download the VC Redist Installer went down.
Microsoft is providing is VC Redist using the HTTPS protocol and the auto-downloader plugin I was using for Inno Setup is not compatible with it.
I looked for a replacement plugin that supports HTTPS; it took me some time to understand how it worked and how to include it safely in my installer.
VC Redist Version
I reduced the minimum version to 23026 which is the last official build.
I’m now self-hosting the VC Redist to avoid any other problem with the link getting down. The user can still download themselves from Microsoft the VC Redist if they don’t trust the version I host.