Clientes no conectan

Hola buenas a ver he actualizado un sus a wsus y ahora no detecta ningún
equipo he revisado que el grupo servicio de red tuviera los pemisos de
escritura y ejecución y que el puerto fuera el 80 a continuación os pongo
parte de windowsupdate.log:

508 cc8 AU #############
2007-04-07 04:58:12 508 cc8 AU ## START ## AU: Search for updates
2007-04-07 04:58:12 508 cc8 AU #########
2007-04-07 04:58:12 508 cc8 AU <<## SUBMITTED ## AU: Search for updates
[CallId = {125B6379-3F9B-486B-B7E3-7B310D5C31D5}]
2007-04-07 04:58:12 508 240 Agent *************
2007-04-07 04:58:12 508 240 Agent ** START ** Agent: Finding updates
[CallerId = AutomaticUpdates]
2007-04-07 04:58:12 508 240 Agent *********
2007-04-07 04:58:12 508 240 Misc WARNING: WinHttp: WinHttpCrackUrl failed.
error 0x80072ee6
2007-04-07 04:58:12 508 240 Misc WARNING: WinHttp: Initialize failed with
0x80072ee6
2007-04-07 04:58:12 508 240 Misc WARNING: WinHttp: WinHttpCrackUrl failed.
error 0x80072ee6
2007-04-07 04:58:12 508 240 Misc WARNING: WinHttp: Initialize failed with
0x80072ee6
2007-04-07 04:58:12 508 240 Misc WARNING: WinHttp: WinHttpCrackUrl failed.
error 0x80072ee6
2007-04-07 04:58:12 508 240 Misc WARNING: WinHttp: Initialize failed with
0x80072ee6
2007-04-07 04:58:12 508 240 Misc WARNING: WinHttp: WinHttpCrackUrl failed.
error 0x80072ee6
2007-04-07 04:58:12 508 240 Misc WARNING: WinHttp: Initialize failed with
0x80072ee6
2007-04-07 04:58:12 508 240 Misc WARNING: DownloadFileInternal failed for
SUS.XXX.es/selfupdate/wuident.cab: error 0x80072ee6
2007-04-07 04:58:12 508 240 Setup FATAL: IsUpdateRequired failed with error
0x80072ee6
2007-04-07 04:58:12 508 240 Setup WARNING: SelfUpdate: Default Service:
IsUpdateRequired failed: 0x80072ee6
2007-04-07 04:58:12 508 240 Setup WARNING: SelfUpdate: Default Service:
IsUpdateRequired failed, error = 0x80072EE6
2007-04-07 04:58:12 508 240 Agent * WARNING: Skipping scan, self-update
check returned 0x80072EE6
2007-04-07 04:58:12 508 240 Agent * WARNING: Exit code = 0x80072EE6
2007-04-07 04:58:12 508 240 Agent *********
2007-04-07 04:58:12 508 240 Agent ** END ** Agent: Finding updates
[CallerId = AutomaticUpdates]

Si alguien me pude dar alguna pista.