Test Discovery Credentials successful irrespective of Port NumberSummaryNavigate to Discovery --> Credentials.Open any Windows Credentials.Test Credentials on an IP which has affinity with these credentials by specifying port number.Test will be successful.Test Credentials on the same IP without providing port number.Test will again be successful. The port number is displayed only for information purpose.Test credential does not rely on port displayed in the UI.In the background, a powershell cmdlet - gwmi win32_operatingsystem -computer $computer -credential $cred -impersonation 3 -authentication 6 -EA "Stop" is called and by default it directly targets to WMI port of target ip address.Thus irrespective of Port displayed on the UI , the credential test will target port 135 and fails only when there is a credentials issue.Related LinksUseful documents: Test CredentialGetting started with credentials