Exchange 2010 Logo

I got the following error while installing Exchange 2010: “There are no more endpoints available from the endpoint mapper. (Exception from HRESULT: 0x800706D9)”

I looked up HRESULT 0x800706D9 which is defined in winerror.h as EPT_S_NOT_REGISTERED with the same error text.

I looked at the ExchangeSetup.log in C:\ExchangeSetupLogs and this indicates that the error occurs when the install-ADTopologyService cmdlet tries to add some rules to the firewall:

Windows Firewall LogoThe Windows Firewall service was disabled, so I set it to Automatic, started it and enabled it and then the setup ran without errors