Steps to reproduce

• Build an app with an xcopy install of .NET Core Preview 8 (3.0.100-preview8-013640)
• Use SignTool.exe to sign the built .exe

Expected behavior

Signing suceeds

Actual behavior

Signing fails with error: 0x800700C1

Notes

This is a regression (from Preview 7). The apphost.exe (and comhost.dll) in the NuGet packages out of core-setup are being signed. We need to avoid signing them, as they are modified when building with the SDK.

This prevents VS from being able to update to build using the 3.0 SDK Preview 8.

This does not affect the bundle installer.