Hello Wolfgang,
I checked the server log and this week there were 27 VC2019 downloads. I
have just tried it and it's working fine (see attached screenshot). In
other words, your protection software blocks access to our server ;-) Just
fix this and you are done.
If your app is 32-bit then you need the 32-bit redistributable. If your app
is 64-bit and requires VC++ support then you need the 64-bit redist.
Does this help?
Friedrich