New Post: Codes 800B0109 (Windows 7) et 57E (Windows 8)

Bonjour,

Je teste depuis quelques jours WPP, mais je ne trouve pas de solutions au problème que je rencontre.
Ma configuration :
Serveur : Windows 2012 R2 Std
WSUS : 6.3.9600.16384 - les MAJ MS fonctionnent correctement
WPP : 1.3.1407.29
Certificat auto-signé : créé via WPP, déployé sur mes postes (W7 et W8).
Même n° de série de certificat sur serveur, postes et .cab créé sur le serveur (j'ai repris l'exemple de TightVNC pour tester la solution).

Ci-dessous mon log Windows Update d'un des postes :
2014-07-30 15:55:35:041 1032 f4c PT +++++++++++ PT: Synchronizing extended update info +++++++++++
2014-07-30 15:55:35:041 1032 f4c PT + ServiceId = {3DA21691-E39D-4DA6-8A4B-B43877BCB1B7}, Server URL = http://IP_SERVER:8530/ClientWebService/client.asmx
2014-07-30 15:55:35:696 1032 f4c Agent * Added update {8821832D-B8AA-46EC-B4DC-4C799BDD1D73}.1 to search result
2014-07-30 15:55:35:696 1032 f4c Agent * Found 1 updates and 75 categories in search; evaluated appl. rules of 977 out of 1660 deployed entities
2014-07-30 15:55:35:696 1032 f4c Agent *********
2014-07-30 15:55:35:696 1032 f4c Agent ** END ** Agent: Finding updates [CallerId = AutomaticUpdates]
2014-07-30 15:55:35:696 1032 f4c Agent *************
2014-07-30 15:55:35:728 1032 dc0 AU >>## RESUMED ## AU: Search for updates [CallId = {10CF6CEC-42B6-4251-9B55-E06FCA39038F}]
2014-07-30 15:55:35:728 1032 dc0 AU # 1 updates detected
2014-07-30 15:55:35:728 1032 dc0 AU #########
2014-07-30 15:55:35:728 1032 dc0 AU ## END ## AU: Search for updates [CallId = {10CF6CEC-42B6-4251-9B55-E06FCA39038F}]
2014-07-30 15:55:35:728 1032 dc0 AU #############
2014-07-30 15:55:35:728 1032 dc0 AU Successfully wrote event for AU health state:0
2014-07-30 15:55:35:728 1032 dc0 AU Featured notifications is disabled.
2014-07-30 15:55:35:728 1032 dc0 AU AU setting next detection timeout to 2014-07-31 08:29:43
2014-07-30 15:55:35:728 1032 dc0 AU Setting AU scheduled install time to 2014-07-31 01:00:00
2014-07-30 15:55:35:728 1032 dc0 AU Successfully wrote event for AU health state:0
2014-07-30 15:55:35:728 1032 dc0 AU Auto-approving update for download, updateId = {8821832D-B8AA-46EC-B4DC-4C799BDD1D73}.1, ForUx=0, IsOwnerUx=0, HasDeadline=0, IsMinor=0
2014-07-30 15:55:35:728 1032 dc0 AU Auto-approved 1 update(s) for download (NOT for Ux)
2014-07-30 15:55:35:728 1032 dc0 AU #############
2014-07-30 15:55:35:728 1032 dc0 AU ## START ## AU: Download updates
2014-07-30 15:55:35:728 1032 dc0 AU #########
2014-07-30 15:55:35:728 1032 dc0 AU # Approved updates = 1
2014-07-30 15:55:35:728 1032 dc0 AU AU initiated download, updateId = {8821832D-B8AA-46EC-B4DC-4C799BDD1D73}.1, callId = {5B231149-893A-4757-8C51-8AD5BFD9F730}
2014-07-30 15:55:35:728 1032 dc0 AU Setting AU scheduled install time to 2014-07-31 01:00:00
2014-07-30 15:55:35:728 1032 dc0 AU Successfully wrote event for AU health state:0
2014-07-30 15:55:35:728 1032 dc0 AU AU setting pending client directive to 'Download Progress'
2014-07-30 15:55:35:728 1032 dc0 AU Successfully wrote event for AU health state:0
2014-07-30 15:55:35:728 1032 dc0 AU # Pending download calls = 1
2014-07-30 15:55:35:728 1032 dc0 AU <<## SUBMITTED ## AU: Download updates
2014-07-30 15:55:35:728 1032 dc0 AU Successfully wrote event for AU health state:0
2014-07-30 15:55:35:728 1032 f4c DnldMgr *************
2014-07-30 15:55:35:728 1032 f4c DnldMgr ** START ** DnldMgr: Downloading updates [CallerId = AutomaticUpdates]
2014-07-30 15:55:35:728 1032 f4c DnldMgr *********
2014-07-30 15:55:35:728 1032 f4c DnldMgr * Call ID = {5B231149-893A-4757-8C51-8AD5BFD9F730}
2014-07-30 15:55:35:728 1032 f4c DnldMgr * Priority = 2, Interactive = 0, Owner is system = 1, Explicit proxy = 0, Proxy session id = -1, ServiceId = {3DA21691-E39D-4DA6-8A4B-B43877BCB1B7}
2014-07-30 15:55:35:728 1032 f4c DnldMgr * Updates to download = 1
2014-07-30 15:55:35:728 1032 f4c Agent * Title = TightVNC
2014-07-30 15:55:35:728 1032 f4c Agent * UpdateId = {8821832D-B8AA-46EC-B4DC-4C799BDD1D73}.1
2014-07-30 15:55:35:728 1032 f4c DnldMgr *********** DnldMgr: New download job [UpdateId = {8821832D-B8AA-46EC-B4DC-4C799BDD1D73}.1] ***********
2014-07-30 15:55:35:728 1032 d20 AU Getting featured update notifications. fIncludeDismissed = true
2014-07-30 15:55:35:728 1032 d20 AU No featured updates available.
2014-07-30 15:55:35:728 1032 f4c DnldMgr * Queueing update for download handler request generation.
2014-07-30 15:55:35:728 1032 f4c DnldMgr Generating download request for update {8821832D-B8AA-46EC-B4DC-4C799BDD1D73}.1
2014-07-30 15:55:35:743 1032 f4c DnldMgr *********** DnldMgr: New download job [UpdateId = {8821832D-B8AA-46EC-B4DC-4C799BDD1D73}.1] ***********
2014-07-30 15:55:35:743 1032 f4c DnldMgr * BITS job initialized, JobId = {1E56EFBD-731C-4655-A1B1-D95FEF9281F2}
2014-07-30 15:55:35:743 1032 f4c DnldMgr * Downloading from http://IP_SERVER:8530/Content/FA/BB3FD64437C9132C4EF34B43876341F7C0B72BFA.cab to C:\windows\SoftwareDistribution\Download\0955eac158ebfcaa5a9fba72a447323f\6f66e144-f0bd-4f32-ba71-8c6a4b4d2c94_1.cab (full file).
2014-07-30 15:55:35:759 1032 f4c Agent *********
2014-07-30 15:55:35:759 1032 f4c Agent ** END ** Agent: Downloading updates [CallerId = AutomaticUpdates]
2014-07-30 15:55:35:759 1032 f4c Agent *************
2014-07-30 15:55:35:759 1032 d84 AU Getting featured update notifications. fIncludeDismissed = true
2014-07-30 15:55:35:759 1032 d84 AU No featured updates available.
2014-07-30 15:55:36:227 1032 7e0 DnldMgr BITS job {1E56EFBD-731C-4655-A1B1-D95FEF9281F2} completed successfully
2014-07-30 15:55:36:289 1032 7e0 Misc Validating signature for C:\windows\SoftwareDistribution\Download\0955eac158ebfcaa5a9fba72a447323f\6f66e144-f0bd-4f32-ba71-8c6a4b4d2c94_1.cab with dwProvFlags 0x00000080:
2014-07-30 15:55:36:305 1032 7e0 Misc FATAL: Error: 0x800b0109 when verifying trust for C:\windows\SoftwareDistribution\Download\0955eac158ebfcaa5a9fba72a447323f\6f66e144-f0bd-4f32-ba71-8c6a4b4d2c94_1.cab
2014-07-30 15:55:36:305 1032 7e0 Misc WARNING: Digital Signatures on file C:\windows\SoftwareDistribution\Download\0955eac158ebfcaa5a9fba72a447323f\6f66e144-f0bd-4f32-ba71-8c6a4b4d2c94_1.cab are not trusted: Error 0x800b0109
2014-07-30 15:55:36:305 1032 7e0 DnldMgr WARNING: VerifyFileTrust on file C:\windows\SoftwareDistribution\Download\0955eac158ebfcaa5a9fba72a447323f\6f66e144-f0bd-4f32-ba71-8c6a4b4d2c94_1.cab failed with hr = 800b0109.
2014-07-30 15:55:36:305 1032 7e0 DnldMgr WARNING: File failed postprocessing, error = 800b0109
2014-07-30 15:55:36:305 1032 7e0 DnldMgr Failed file: URL = 'http://IP_SERVER:8530/Content/FA/BB3FD64437C9132C4EF34B43876341F7C0B72BFA.cab', Local path = 'C:\windows\SoftwareDistribution\Download\0955eac158ebfcaa5a9fba72a447323f\6f66e144-f0bd-4f32-ba71-8c6a4b4d2c94_1.cab'
2014-07-30 15:55:36:305 1032 7e0 DnldMgr Error 0x800b0109 occurred while downloading update; notifying dependent calls.
2014-07-30 15:55:36:320 1032 dc0 AU >>## RESUMED ## AU: Download update [UpdateId = {8821832D-B8AA-46EC-B4DC-4C799BDD1D73}]
2014-07-30 15:55:36:320 1032 dc0 AU # WARNING: Download failed, error = 0x800B0109
2014-07-30 15:55:36:320 1032 dc0 AU #########
2014-07-30 15:55:36:320 1032 dc0 AU ## END ## AU: Download updates
2014-07-30 15:55:36:320 1032 dc0 AU #############
2014-07-30 15:55:36:320 1032 dc0 AU Setting AU scheduled install time to 2014-07-31 01:00:00
2014-07-30 15:55:36:320 1032 dc0 AU Successfully wrote event for AU health state:0
2014-07-30 15:55:36:320 1032 f4c Report REPORT EVENT: {D2CEAC1E-C3AF-4C93-A686-593A129C283C} 2014-07-30 15:55:35:696+0200 1 147 101 {00000000-0000-0000-0000-000000000000} 0 0 AutomaticUpdates Success Software Synchronization Windows Update Client successfully detected 1 updates.
2014-07-30 15:55:36:320 1032 f4c Report REPORT EVENT: {D82B4047-882C-44CD-8F66-0C5E3A07C0D0} 2014-07-30 15:55:35:696+0200 1 156 101 {00000000-0000-0000-0000-000000000000} 0 0 AutomaticUpdates Success Pre-Deployment Check Reporting client status.
2014-07-30 15:55:36:320 1032 f4c Report REPORT EVENT: {92766AAB-7B60-4B4D-852F-CE4BA895D591} 2014-07-30 15:55:36:320+0200 1 161 101 {8821832D-B8AA-46EC-B4DC-4C799BDD1D73} 1 800b0109 AutomaticUpdates Failure Content Download Error: Download failed.

qui me dit des grossièretés concernant la signature qui me semble correcte.
Je sèche donc et toute aide serait la bienvenue !!

Merci d'avance.
Laurent