COM Interop of WPF Custom Control - Access denied about the registry key HKEY_CLASSES_ROOT\...

Question

Hi, I have a problem building a project.
My purpose is to build a WPF Custom Control in order to use it in MFC.
But the build cannot be done.
The following informations are what I am through right now:

Project Type: WPF Custom Control Library
Framework Version: 4.7.2
Language: C#

Setup:

• Project Property->Application->Assembly Information->Set Assembly Visible in COM
• Project Property->Build->Output->Regist COM Interop
• Build -> Error

Error Message:
unable to register the assembly "D:{MyWorkSpaceFolder}{MyProjectName}\bin\x64\Release{MyProjectName}.dll".
Access denied.
Check if the application is executed in administrator's authority.
Access denied about the registry key 'HKEY_CLASSES_ROOT{MyProjectName.MyControl}.

I have tried to solve this issue in many ways such as:

• Changing the framework versions
• Changing the HKEY_CLASSES_ROOT's authority in Registry Editor (Which made my computer not working)
• Using different project types

None of them worked. Please help me.

Thank you

Answer 1

Did you also try running Visual Studio as an administrator?