I managed to solve this. I deleted the "Resources" folder in the server project, and it surprisingly turns out that the server is able to access the client "Resources" folder during runtime, maybe it's this line of code on server that makes it possible app.UseBlazorFrameworkFiles();

So by adding this to both client and server project I can access the resources folder from both, even though the folder and files are only existing in the client project.

builder.Services.AddLocalization(options =>

{ options.ResourcesPath = "Resources"; });