TYPESCRIPT

An attempt was made to access a socket in a way forbidden by its access permissions

iisreset -stop

SocketException: An attempt was made to access a socket in a way forbidden by its access permissions. in core 6.0

netsh interface ipv4 show excludedportrange protocol=tcp

 Running `net stop winnat` cleared excluded ports

An attempt was made to access a socket in a way forbidden by its access permissions.

Disable Hyper-V:

dism.exe /Online /Disable-Feature:Microsoft-Hyper-V


After the required restarts, reserve the port you want so Hyper-V doesn't reserve it back:

netsh int ipv4 add excludedportrange protocol=tcp startport=3001 numberofports=1


Reenable Hyper-V:

dism.exe /Online /Enable-Feature:Microsoft-Hyper-V /All

netcore An attempt was made to access a socket in a way forbidden by its access permissions.

The port is busy, you probably have another 
project running and you don't remember it :)