About COM Registration for .NETFramework

One .Visual Studio solution for NetFramework 4.0
When I tried to run from the IDE,

Unable to register assembly "XXX.dll" - Access denied.Verify that you are running the application as an administrator.Access to registry key 'HKEY_CLASSES_ROOT\XXX.XXXDef' denied

The build failed with the message (the build itself was successful and COM registration failed).but)

This solution is
Project 1 (execution file.exe)
Project 2 (Functional Collection.dll)
is configured to
Project 1 refers to Project 2
If you run VisualStudio with administrator privileges, you can run it without errors and
on other machines. Copy exe and dll to work without having to register dll with Regsvr32

I have a question. Is there any point in COM registration of libraries for .NetFramework in the first place?