![IIS Express error: Failed to register URL for site. The process cannot access the file because it is being used by another process. IIS Express error: Failed to register URL for site. The process cannot access the file because it is being used by another process.](https://static.gunnarpeipman.com/wp-content/uploads/2009/02/iis-featured.png)
IIS Express error: Failed to register URL for site. The process cannot access the file because it is being used by another process.
![IIS Express error: Failed to register URL for site. The process cannot access the file because it is being used by another process. IIS Express error: Failed to register URL for site. The process cannot access the file because it is being used by another process.](https://static.gunnarpeipman.com/wp-content/uploads/2020/08/aspnet-set-application-port_thumb.png)
IIS Express error: Failed to register URL for site. The process cannot access the file because it is being used by another process.
![Debugging Multiple ASP.NET Core Projects in a Single Solution – DOTNET CATCH – Blogging .NET, C# and DevOps topics. Debugging Multiple ASP.NET Core Projects in a Single Solution – DOTNET CATCH – Blogging .NET, C# and DevOps topics.](https://i0.wp.com/www.dotnetcatch.com/wp-content/uploads/2018/10/image_thumb-5.png?resize=498%2C374&ssl=1)