Trying to install latest version of SEPM (4.00.6001.00) on a Server 2008 (that is also AD, the only server in the company). It fails immediately after the pop up box saying

"To continue the installation, make sure that the Internet Information Services (IIS) World Wide Web Publishing Service (W3SVC) is installed and running. On computers that run IIS 7.0 or later, the following IIS role services must also be installed: ASP.NET, CGI, and IIS 6.0 Management Compatibility."

...with the message

"The wizard was interrupted before Symantec Endpoint Protection Manaer could be completely installed."

I have installed those requirements. The relevant part (I think) of the install log that I copy in below also say it is. What else can be wrong? I see a "Info 2835.The control ErrorIcon was not found on dialog SetupError." just before that message.

(...)
MSI (c) (50:5C) [08:14:55:407]: Doing action: CheckSEPMRequiredServices
Action 08:14:55: CheckSEPMRequiredServices.
Action start 08:14:55: CheckSEPMRequiredServices.
MSI (c) (50:40) [08:14:55:407]: Invoking remote custom action. DLL: C:\Users\ADMINI~1\AppData\Local\Temp\2\MSI877C.tmp, Entrypoint: CheckSEPMRequiredServices
SESM CA: CheckService:OpenService handle 3584472 W3SVC
SESM CA: CheckService Service W3SVC is installed and running.
SESM CA: CheckSEPMRequiredServices: All required services are installed and running.
MSI (c) (50!78) [08:14:55:423]: PROPERTY CHANGE: Adding SEPMServicesRunning property. Its value is '1'.
Action ended 08:14:55: CheckSEPMRequiredServices. Return value 1.
MSI (c) (50:5C) [08:14:55:423]: Doing action: IsRebootRequiredOSAutoUpdate.B754A361_3344_430B_92FF_8F9A227A6B9
Action 08:14:55: IsRebootRequiredOSAutoUpdate.B754A361_3344_430B_92FF_8F9A227A6B9.
Action start 08:14:55: IsRebootRequiredOSAutoUpdate.B754A361_3344_430B_92FF_8F9A227A6B9.
MSI (c) (50:AC) [08:14:55:423]: Invoking remote custom action. DLL: C:\Users\ADMINI~1\AppData\Local\Temp\2\MSI878C.tmp, Entrypoint: IsRebootRequiredOSAutoUpdate
Action ended 08:14:55: IsRebootRequiredOSAutoUpdate.B754A361_3344_430B_92FF_8F9A227A6B9. Return value 1.
MSI (c) (50:5C) [08:14:55:423]: Doing action: LaunchConditions
Action 08:14:55: LaunchConditions. Evaluating launch conditions
Action start 08:14:55: LaunchConditions.
Info 2898.For Tahoma8 textstyle, the system created a 'Tahoma' font, in 0 character set.
Info 2835.The control ErrorIcon was not found on dialog SetupError.
To continue the installation, make sure that the Internet Information Services (IIS) World Wide Web Publishing Service (W3SVC) is installed and running. On computers that run IIS 7.0 or later, the following IIS role services must also be installed: ASP.NET, CGI, and IIS 6.0 Management Compatibility.
MSI (c) (50:5C) [08:14:58:309]: Product: Symantec Endpoint Protection Manager -- To continue the installation, make sure that the Internet Information Services (IIS) World Wide Web Publishing Service (W3SVC) is installed and running. On computers that run IIS 7.0 or later, the following IIS role services must also be installed: ASP.NET, CGI, and IIS 6.0 Management Compatibility.

Action ended 08:14:58: LaunchConditions. Return value 3.
MSI (c) (50:5C) [08:14:58:309]: Doing action: SetupCompleteError
Action 08:14:58: SetupCompleteError.
Action start 08:14:58: SetupCompleteError.
Info 2898.For TahomaBold10 textstyle, the system created a 'Tahoma' font, in 0 character set.
Action 08:14:58: SetupCompleteError. Dialog created
MSI (c) (50:78) [08:14:58:325]: Note: 1: 2731 2: 0
Action ended 08:15:01: SetupCompleteError. Return value 2.
Action ended 08:15:01: INSTALL. Return value 3.
(...)