To remediate the situation, you need to access the Registry. Navigate to:
and check its value. Please note that it is a MultiString (REGMULTISZ) value.
If the value is 127.0.0.1, replace it with 0.0.0.0. This MUST be the only value in the list.
If the ListenOnlyList value doesn't exist, it means that the default one (0.0.0.0) is applied.
Once the value is changed, you need to restart the HTTP service.Since it has multiple dependencies, you can do it from PowerShell as shown below:
PS C:\> restart-service HTTP -passthru -force
Status Name DisplayName
------ ---- -----------
Running WinRM Windows Remote Management (WS-Manag...
Running Spooler Print Spooler
WARNING: Waiting for service 'Dell Data Protection | Rapid Recovery Agent Service (RapidRecoveryAgent)' to start...
Running RapidRecoveryAgent Dell Data Protection | Rapid Recove...
Running DsmSvc Device Setup Manager
Running HTTP HTTP Service
The Agent should be able to communicate with the Core now.