Fix: IIS Express fails to start - Access is denied
Created Apr 9, 2021 - Last updated: Apr 9, 2021
Evergreen 🌳
iis
localhost
Failed to register URL “http://localhost:64831/” for site “Development Web Site” application “/”. Error description: Access is denied. (0x80070005)
Diagnose
Port exclusions can be reserved by Docker or Hyper-V that conflict with the port used by IIS Express for a given project. You can verify this your issue with the following command to list the excluded port ranges.
netsh interface ipv4 show excludedportrange protocol=tcp
Protocol tcp Port Exclusion Ranges
Start Port End Port
---------- --------
49787 49886
50000 50059 *
50160 50259
50260 50359
51212 51212 *
56464 56563
56580 56679
57010 57109
64808 64909
In this case the range 64808 - 64909 is the cause and IIS Express will not be able to use it.
Fix
The following procedure will reserve the port used by the project.
- Navigate to Windows features on or off
- Turn off the Hyper-V feature
- Reboot
- Reserve the port using the command:
netsh int ipv4 add excludedportrange protocol=tcp startport=64831 numberofports=1 store=persistent
Run the following to verify the port has been reserved:
netsh interface ipv4 show excludedportrange protocol=tcp
Protocol tcp Port Exclusion Ranges
Start Port End Port
---------- --------
49787 49886
50000 50059 *
50160 50259
50260 50359
51212 51212 *
56464 56563
56580 56679
57010 57109
64831 64831 *
* - Administered port exclusions.