If you upgrade your Windows Server using iSCSI Initiator version 1.06 to version 2.0, and subsequently uninstall iSCSI Initiator version 2.0, you receive:

The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2753.

Your Application Event log may record:

Event Type: Error
Event Source: MsiInstaller
Event Category: None
Event ID: 10005
Date: MM/DD/YYYY
Time: HH:MM:SS
User: <User Name>
Computer: <Computer Name>
Description: Product: Microsoft iSCSI Initiator -- The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2753. The arguments are: _6F676F21B2C24BB6B1C01E2FF6B74AEB

This behavior will occur if the iSCSI Initiator registry keys are properly restored.

If this problem has already occurred:

1. Open a CMD.EXE window.

2. Using REG.EXE built into Windows Server 2003, or installed from the Support Tools on the Windows 2000 Server installation CD-ROM,
    type REG DELETE "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\iSCSI" /F and press Enter.

To prevent the problem if you haven't upgraded to iSCSI version 2.0 yet, use Control Panel / Add or Remove Programs to uninstall iSCSI Initiator version 1.06 before you install iSCSI Initiator version 2.0.

NOTE: Download the Microsoft iSCSI Software Initiator Osaka Users Guide.

NOTE: For a different iSCSI problem, see You may be unable to start the computer after you modify the iSCSI Install package in Windows Server 2003 or Windows 2000 Server.