Microsoft are enforcing the usage of newer signing
certificates (SHA256, instead of SHA1). Because of that, a warning is shown
when downloading MSI files using Internet Explorer or Edge (Figure 1).
This warning can safely be ignored, if you obtained the MSI
files from our website (http://www.telerik.com).
information from Microsoft: LINK
The workaround is to use browser different than Internet
Explorer or Edge, or simply ignore the warning.
We are currently working on fixing the described issue.
Thank you for your understanding.
the Telerik team