Can't access local files from deployed application.

In my application, I need to be able to open local files on the local PC.

I’ve installed:

Packages:   (reference couldn’t be posted spelled as per Web.config)
 Include=”Wisej-3″ Version=”3.5.23″ />
 Include=”Wisej-3-AceEditor” Version=”3.5.23″ />
 Include=”Wisej-3-ClientClipboard” Version=”3.5.23″ />
 Include=”Wisej-3-ClientFileSystem” Version=”3.5.23″ />
 Include=”Wisej-3-TinyEditor” Version=”3.5.23″ />

When I run my application in Microsoft Edge, I receive an error: Access to the path ‘C:\xxxx\yyyy\zz’ is denied. (directory does exist)

In my development environment all this works well…

any suggestions?

Thanks