Steps to replicate:
1. run VS 2019 v
2. create a new UWP project using VB.NET
3. prompt appears for login credentials? (see attached image)
Error is listed:
"Failed to download package 'Microsoft.Net.UWPCoreRuntimeSdk.2.2.9' from 'https://api.nuget.org/v3-flatcontainer/microsoft.net.uwpcorerutimesdk/2.2.9/microsoft.net.uwpcoreruntimesdk.2.2.9.nupkg'. The ServicePointManager does not support proxies with https scheme."
What/where are this credentials?? (they aren't my telerik account credentials, that much I know)