OUTLOOK refusé pour le présent utilisateur

Bonjour,

Depuis quelques jour OUTLOOK refuse de démarrer en me disant qu'il n'a pas été installé pour le présent utilisateur.
Après quelques recherches, j'ai trouvé qu'il était conseillé de faire une mise à jour par l'installation de nouveau programme : sans succès.
J'ai essayé de réparer, de réinstaller, mais à chaque fois le problème persiste : y aurait-il autre chose ?

J'ai scanné avec Asquare, puis spybot .
Enfin j'ai passé Antivir, tout cela en scan détaillé (5h00 au total...)

Les antispy n'ont rien trouvé et voici le rapport d'AntiVir :

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Avira AntiVir Personal
Report file date: samedi 7 juin 2008 14:40

Scanning for 1313263 virus strains and unwanted programs.

Licensed to: Avira AntiVir PersonalEdition Classic
Serial number: 0000149996-ADJIE-0001
Platform: Windows XP
Windows version: (Service Pack 2) [5.1.2600]
Boot mode: Normally booted
Username: SYSTEM
Computer name: ZEKOMPUTEUR

Version information:
BUILD.DAT : 8.1.0.308 16478 Bytes 28/05/2008 17:03:00
AVSCAN.EXE : 8.1.2.12 311553 Bytes 27/04/2008 00:27:44
AVSCAN.DLL : 8.1.1.0 53505 Bytes 27/04/2008 00:27:44
LUKE.DLL : 8.1.2.9 151809 Bytes 27/04/2008 00:27:44
LUKERES.DLL : 8.1.2.1 12033 Bytes 27/04/2008 00:27:44
ANTIVIR0.VDF : 6.40.0.0 11030528 Bytes 18/07/2007 13:27:15
ANTIVIR1.VDF : 7.0.3.2 5447168 Bytes 07/03/2008 00:27:45
ANTIVIR2.VDF : 7.0.4.120 2206720 Bytes 01/06/2008 16:43:51
ANTIVIR3.VDF : 7.0.4.156 144896 Bytes 06/06/2008 07:33:15
Engineversion : 8.1.0.55
AEVDF.DLL : 8.1.0.5 102772 Bytes 27/04/2008 00:27:45
AESCRIPT.DLL : 8.1.0.40 266618 Bytes 07/06/2008 07:33:19
AESCN.DLL : 8.1.0.21 119156 Bytes 07/06/2008 07:33:18
AERDL.DLL : 8.1.0.20 418165 Bytes 27/04/2008 00:27:45
AEPACK.DLL : 8.1.1.5 364918 Bytes 16/05/2008 16:48:08
AEOFFICE.DLL : 8.1.0.18 192890 Bytes 27/04/2008 00:27:45
AEHEUR.DLL : 8.1.0.30 1253750 Bytes 07/06/2008 07:33:18
AEHELP.DLL : 8.1.0.15 115063 Bytes 29/05/2008 16:48:23
AEGEN.DLL : 8.1.0.28 307572 Bytes 07/06/2008 07:33:16
AEEMU.DLL : 8.1.0.6 430451 Bytes 08/05/2008 19:34:12
AECORE.DLL : 8.1.0.31 168310 Bytes 07/06/2008 07:33:15
AVWINLL.DLL : 1.0.0.7 14593 Bytes 27/04/2008 00:27:44
AVPREF.DLL : 8.0.0.1 25857 Bytes 27/04/2008 00:27:44
AVREP.DLL : 7.0.0.1 155688 Bytes 16/04/2007 12:16:24
AVREG.DLL : 8.0.0.0 30977 Bytes 27/04/2008 00:27:44
AVARKT.DLL : 1.0.0.23 307457 Bytes 27/04/2008 00:27:43
AVEVTLOG.DLL : 8.0.0.11 114945 Bytes 27/04/2008 00:27:44
SQLITE3.DLL : 3.3.17.1 339968 Bytes 27/04/2008 00:27:44
SMTPLIB.DLL : 1.2.0.19 28929 Bytes 27/04/2008 00:27:44
NETNT.DLL : 8.0.0.1 7937 Bytes 27/04/2008 00:27:44
RCIMAGE.DLL : 8.0.0.35 2371841 Bytes 27/04/2008 00:27:42
RCTEXT.DLL : 8.0.32.0 86273 Bytes 27/04/2008 00:27:42

Configuration settings for the scan:
Jobname..........................: Complete system scan
Configuration file...............: c:\program files\avira\antivir personaledition classic\sysscan.avp
Logging..........................: low
Primary action...................: interactive
Secondary action.................: ignore
Scan master boot sector..........: on
Scan boot sector.................: on
Boot sectors.....................: C:, F:, G:,
Scan memory......................: on
Process scan.....................: on
Scan registry....................: on
Search for rootkits..............: off
Scan all files...................: Intelligent file selection
Scan archives....................: on
Recursion depth..................: 20
Smart extensions.................: on
Macro heuristic..................: on
File heuristic...................: medium

Start of the scan: samedi 7 juin 2008 14:40

The scan of running processes will be started
Scan process 'avscan.exe' - '1' Module(s) have been scanned
Scan process 'avcenter.exe' - '1' Module(s) have been scanned
Scan process 'a2service.exe' - '1' Module(s) have been scanned
Scan process 'avgnt.exe' - '1' Module(s) have been scanned
Scan process 'skypePM.exe' - '1' Module(s) have been scanned
Scan process 'orbitnet.exe' - '1' Module(s) have been scanned
Scan process 'svchost.exe' - '1' Module(s) have been scanned
Scan process 'rapimgr.exe' - '1' Module(s) have been scanned
Scan process 'alg.exe' - '1' Module(s) have been scanned
Scan process 'FxSvr2.exe' - '1' Module(s) have been scanned
Scan process 'orbitdm.exe' - '1' Module(s) have been scanned
Scan process 'Hyperappel.exe' - '1' Module(s) have been scanned
Scan process 'wcescomm.exe' - '1' Module(s) have been scanned
Scan process 'Skype.exe' - '1' Module(s) have been scanned
Scan process 'daemon.exe' - '1' Module(s) have been scanned
Scan process 'TeaTimer.exe' - '1' Module(s) have been scanned
Scan process 'qttask.exe' - '1' Module(s) have been scanned
Scan process 'zlclient.exe' - '0' Module(s) have been scanned
Scan process 'opware32.exe' - '1' Module(s) have been scanned
Scan process 'avgas.exe' - '1' Module(s) have been scanned
Scan process 'PDVDServ.exe' - '1' Module(s) have been scanned
Scan process 'LogiTray.exe' - '1' Module(s) have been scanned
Scan process 'ULCDRSvr.exe' - '1' Module(s) have been scanned
Scan process 'LVCOMSX.EXE' - '1' Module(s) have been scanned
Scan process 'jusched.exe' - '1' Module(s) have been scanned
Scan process 'svchost.exe' - '1' Module(s) have been scanned
Scan process 'RichVideo.exe' - '1' Module(s) have been scanned
Scan process 'nvsvc32.exe' - '1' Module(s) have been scanned
Scan process 'NvMixerTray.exe' - '1' Module(s) have been scanned
Scan process 'guard.exe' - '1' Module(s) have been scanned
Scan process 'sched.exe' - '1' Module(s) have been scanned
Scan process 'explorer.exe' - '1' Module(s) have been scanned
Scan process 'avguard.exe' - '1' Module(s) have been scanned
Scan process 'spoolsv.exe' - '1' Module(s) have been scanned
Scan process 'vsmon.exe' - '0' Module(s) have been scanned
Scan process 'svchost.exe' - '1' Module(s) have been scanned
Scan process 'svchost.exe' - '1' Module(s) have been scanned
Scan process 'svchost.exe' - '1' Module(s) have been scanned
Scan process 'svchost.exe' - '1' Module(s) have been scanned
Scan process 'svchost.exe' - '1' Module(s) have been scanned
Scan process 'lsass.exe' - '1' Module(s) have been scanned
Scan process 'services.exe' - '1' Module(s) have been scanned
Scan process 'winlogon.exe' - '1' Module(s) have been scanned
Scan process 'csrss.exe' - '1' Module(s) have been scanned
Scan process 'smss.exe' - '1' Module(s) have been scanned
43 processes with 43 modules were scanned

Starting master boot sector scan:
Master boot sector HD0
[INFO] No virus was found!
Master boot sector HD1
[INFO] No virus was found!
[WARNING] Le périphérique n'est pas prêt.
Master boot sector HD2
[INFO] No virus was found!
[WARNING] Le périphérique n'est pas prêt.
Master boot sector HD3
[INFO] No virus was found!
[WARNING] Le périphérique n'est pas prêt.
Master boot sector HD4
[INFO] No virus was found!
[WARNING] Le périphérique n'est pas prêt.

Start scanning boot sectors:
Boot sector 'C:\'
[INFO] No virus was found!
Boot sector 'F:\'
[INFO] No virus was found!
Boot sector 'G:\'
[INFO] No virus was found!

Starting to scan the registry.
The registry was scanned ( '28' files ).

Starting the file scan:

Begin scan in 'C:\' <Système et programmes>
C:\hiberfil.sys
[WARNING] The file could not be opened!
C:\pagefile.sys
[WARNING] The file could not be opened!
C:\WINDOWS\system32\drivers\sptd.sys
[WARNING] The file could not be opened!
Begin scan in 'F:\' <Documents>
Begin scan in 'G:\' <Partage>

End of the scan: samedi 7 juin 2008 15:41
Used time: 1:00:10 min

The scan has been done completely.

7973 Scanning directories
368975 Files were scanned
0 viruses and/or unwanted programs were found
0 Files were classified as suspicious:
0 files were deleted
0 files were repaired
0 files were moved to quarantine
0 files were renamed
3 Files cannot be scanned
368975 Files not concerned
3390 Archives were scanned
7 Warnings
0 Notes

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Pour finir, voici le HiJackThis :

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Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 16:11:10, on 07/06/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
Boot mode: Normal

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\ZoneLabs\vsmon.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Avira\AntiVir PersonalEdition Classic\avguard.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Avira\AntiVir PersonalEdition Classic\sched.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
C:\Program Files\NVIDIA Corporation\NvMixer\NVMixerTray.exe
C:\WINDOWS\system32\nvsvc32.exe
C:\Program Files\CyberLink\Shared files\RichVideo.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Java\jre1.6.0_05\bin\jusched.exe
C:\WINDOWS\system32\LVCOMSX.EXE
C:\Program Files\Fichiers communs\Ulead Systems\DVD\ULCDRSvr.exe
C:\Program Files\Logitech\Video\LogiTray.exe
C:\Program Files\CyberLink\PowerDVD\PDVDServ.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\avgas.exe
C:\Program Files\ScanSoft\OmniPageSE\opware32.exe
C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
C:\Program Files\DAEMON Tools\daemon.exe
C:\Program Files\Skype\Phone\Skype.exe
C:\Program Files\Microsoft ActiveSync\wcescomm.exe
C:\Program Files\Larousse\Petit Larousse 2008\bin\Hyperappel.exe
C:\Program Files\Orbitdownloader\orbitdm.exe
C:\Program Files\Logitech\Video\FxSvr2.exe
C:\PROGRA~1\MICROS~4\rapimgr.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Orbitdownloader\orbitnet.exe
C:\Program Files\Skype\Plugin Manager\skypePM.exe
C:\Program Files\Avira\AntiVir PersonalEdition Classic\avgnt.exe
c:\program files\a-squared free\a2service.exe
C:\Program Files\Microsoft Office\Office10\WINWORD.EXE
C:\Program Files\Mozilla Firefox\firefox.exe
c:\program files\avira\antivir personaledition classic\avcenter.exe
C:\WINDOWS\system32\notepad.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.google.fr/?gws_rd=ssl
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
R3 - URLSearchHook: Yahoo! Toolbar avec bloqueur de fenêtres pop-up - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - (no file)
O1 - Hosts: 85.12.25.241 forum.ppcwarez.org
O2 - BHO: btorbit.com - {000123B4-9B42-4900-B3F7-F4B073EFC214} - C:\Program Files\Orbitdownloader\orbitcth.dll
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: Spybot-S&D IE Protection - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_05\bin\ssv.dll
O4 - HKLM\..\Run: [NVMixerTray] "C:\Program Files\NVIDIA Corporation\NvMixer\NVMixerTray.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_05\bin\jusched.exe"
O4 - HKLM\..\Run: [LVCOMSX] C:\WINDOWS\system32\LVCOMSX.EXE
O4 - HKLM\..\Run: [LogitechVideoRepair] C:\Program Files\Logitech\Video\ISStart.exe
O4 - HKLM\..\Run: [LogitechVideoTray] C:\Program Files\Logitech\Video\LogiTray.exe
O4 - HKLM\..\Run: [RemoteControl] "C:\Program Files\CyberLink\PowerDVD\PDVDServ.exe"
O4 - HKLM\..\Run: [LanguageShortcut] "C:\Program Files\CyberLink\PowerDVD\Language\Language.exe"
O4 - HKLM\..\Run: [!AVG Anti-Spyware] "C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\avgas.exe" /minimized
O4 - HKLM\..\Run: [Omnipage] C:\Program Files\ScanSoft\OmniPageSE\opware32.exe
O4 - HKLM\..\Run: [avgnt] "C:\Program Files\Avira\AntiVir PersonalEdition Classic\avgnt.exe" /min
O4 - HKLM\..\Run: [ZoneAlarm Client] "C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [UVS10 Preload] C:\Program Files\Ulead Systems\Ulead VideoStudio 10\uvPL.exe
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKCU\..\Run: [SpybotSD TeaTimer] C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
O4 - HKCU\..\Run: [LogitechSoftwareUpdate] "C:\Program Files\Logitech\Video\ManifestEngine.exe" boot
O4 - HKCU\..\Run: [DAEMON Tools] "C:\Program Files\DAEMON Tools\daemon.exe" -lang 1033
O4 - HKCU\..\Run: [updateMgr] "C:\Program Files\Adobe\Acrobat 7.0\Reader\AdobeUpdateManager.exe" AcRdB7_0_9 -reboot 1
O4 - HKCU\..\Run: [Skype] "C:\Program Files\Skype\Phone\Skype.exe" /nosplash /minimized
O4 - HKCU\..\Run: [H/PC Connection Agent] "C:\Program Files\Microsoft ActiveSync\wcescomm.exe"
O4 - Global Startup: Hyperappel du Petit Larousse 2008.lnk = C:\Program Files\Larousse\Petit Larousse 2008\bin\Hyperappel.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O4 - Global Startup: Orbit.lnk = C:\Program Files\Orbitdownloader\orbitdm.exe
O8 - Extra context menu item: &Download by Orbit - res://C:\Program Files\Orbitdownloader\orbitmxt.dll/201
O8 - Extra context menu item: &Grab video by Orbit - res://C:\Program Files\Orbitdownloader\orbitmxt.dll/204
O8 - Extra context menu item: Do&wnload selected by Orbit - res://C:\Program Files\Orbitdownloader\orbitmxt.dll/203
O8 - Extra context menu item: Down&load all by Orbit - res://C:\Program Files\Orbitdownloader\orbitmxt.dll/202
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_05\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_05\bin\ssv.dll
O9 - Extra button: Create Mobile Favorite - {2EAF5BB1-070F-11D3-9307-00C04FAE2D4F} - C:\PROGRA~1\MICROS~4\INetRepl.dll
O9 - Extra button: (no name) - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\PROGRA~1\MICROS~4\INetRepl.dll
O9 - Extra 'Tools' menuitem: Créer un Favori de l'appareil mobile... - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\PROGRA~1\MICROS~4\INetRepl.dll
O9 - Extra button: (no name) - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra 'Tools' menuitem: Spybot - Search & Destroy Configuration - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (YInstStarter Class) - C:\Program Files\Yahoo!\Common\yinsthelper.dll
O16 - DPF: {5D86DDB5-BDF9-441B-9E9E-D4730F4EE499} (BDSCANONLINE Control) - http://download.bitdefender.com/resources/scan8/oscan8.cab
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\FICHIE~1\Skype\SKYPE4~1.DLL
O23 - Service: a-squared Free Service (a2free) - Emsi Software GmbH - c:\program files\a-squared free\a2service.exe
O23 - Service: AntiVir PersonalEdition Classic Scheduler (AntiVirScheduler) - Avira GmbH - C:\Program Files\Avira\AntiVir PersonalEdition Classic\sched.exe
O23 - Service: AntiVir PersonalEdition Classic Guard (AntiVirService) - Avira GmbH - C:\Program Files\Avira\AntiVir PersonalEdition Classic\avguard.exe
O23 - Service: AVG Anti-Spyware Guard - GRISOFT s.r.o. - C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: Cyberlink RichVideo Service(CRVS) (RichVideo) - Unknown owner - C:\Program Files\CyberLink\Shared files\RichVideo.exe
O23 - Service: Ulead Burning Helper (UleadBurningHelper) - Ulead Systems, Inc. - C:\Program Files\Fichiers communs\Ulead Systems\DVD\ULCDRSvr.exe
O23 - Service: TrueVector Internet Monitor (vsmon) - Zone Labs, LLC - C:\WINDOWS\system32\ZoneLabs\vsmon.exe