C'est Windows 2000 Server.
J'ai eu cette erreur quand j'ai installé Avast 8:
22.01.201414:00:24Started: 22.01.2014, 14:00:24
22.01.201414:00:24Operation set to INST_OP_UNKNOWN
22.01.201414:00:24Set registry: AvastPersistentStorage\GUID=cdf45bd5-4fe0-4024-b59b-66954606da72
22.01.201414:00:24Old version: ffffffff (-1)
22.01.201414:00:24Cmdline: /sfx /sfxstorage "C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\_av_sfx.tm~9915411b-ba59-46b4-8e64-e08a6a79ff0e" /GetEdition:free /edition "1" /brandcode "A" /srcpath "C:\DOCUME~1\ADMINI~1\MESDOC~1\TLCHAR~1\AVASTF~1" /sfxname "avast_free_antivirus_setup"
22.01.201414:00:24SYNCER: Agent=Syncer/5.00 (ais-1497;p)
22.01.201414:00:24Running SETUP_AIS-5d9 (1497)
22.01.201414:00:24Operating system: Windows 2000 ver 5.0, build 2195, sp 4.0 [Service Pack 4] SERVER
22.01.201414:00:24Memory: 13% load. Phys:1819672/2096608K free, Page:3886056/4035892K free, Virt:2060932/2097024K free
22.01.201414:00:24Computer WinName: P-III-SCSI
22.01.201414:00:24Windows Net User: P-III-SCSI\Administrateur
22.01.201414:00:24DldSrc set to sfx
22.01.201414:00:24Old version: ffffffff (-1)
22.01.201414:00:24Install check: SetupVersion does NOT exist
22.01.201414:00:24SGW32AIS::CheckIfInstalled set m_bAlreadyInstalled and m_bIsOldVersionDetected to 0
22.01.201414:00:26SYNCER: Agent=Syncer/5.00 (ais-1497;p)
22.01.201414:00:26SYNCER: Type: use IE settings
22.01.201414:00:26SYNCER: Auth: another authentication, use WinInet
22.01.201414:00:26Used server:
22.01.201414:00:26Setup GUI has been successfuly loaded from DLL.
22.01.201414:00:26Ignoring cmdline switch: /GetEdition:free
22.01.201414:00:26Get registry: Software\Microsoft\Internet Explorer\Version=6.0.2600.0000
22.01.201414:00:26Error:Your operating system does not meet the requirements. This edition of avast! cannot be installed on Windows Server.