Manifest may not be valid or the file could not be opened.

Question

I know it is a very commonly faced problem. But, there is a slight difference, my WPF installs perfectly and runs on Windows 7 and Windows 8 OSes. But, when tried to install

Answer 1

I had similar issue, almost the same. I solved an issue by removing .dll that are not in root of application files.

Visual studio 2019: Right click on project name - Properties - Publish - Application files.

Like in this article: https://social.msdn.microsoft.com/Forums/en-US/3d0c4382-9b48-4d28-9b79-25607e668074/problem-with-installing-clickonce-after-adding-reportviewercontrol-14-to-the-project?forum=winformssetup