Notes for Windows XP:

• Check whether the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce (Windows XP) exists. If not, please create this key. The key may be empty but has to be present!

Windows 7, Windows Vista and Windows XP:

1. Could you please check if the H+H Virtual CD SCSI Controller is listed and activated in the device manager? If the controller is marked with a yellow exclamation mark, please remove H+H Virtual CD SCSI Controller and reinstall the driver manually. The corresponding file is an OEMxx.INF file in the Windows\Inf directory. The size of the file is 3 KB AND the first line of this file is in
   - Virtual CD v10: VDRV1064.INF (Windows 64 bit) respectively VDRV1000.INF (Windows 32 bit) and the size is 3 KB 
     (Maybe there are lots of OEMxx.INF files on your system so it might be helpful using search function of Windows Explorer)
   - Virtual CD v9: VDRV9064.INF (Windows 64 bit) respectively VDRV9000.INF (Windows 32 bit) AND
   -- the 13th line must have the value DriverVer = 03/17/2009,9.00.00.37 (Virtual CD v9.3.0.1 and newer)
   -- line 13 is DriverVer = 01/01/2007,9.00.00.0 (Virtual CD v9.0.x to v9.3.0.0).
   
   If H+H Virtual CD SCSI Controller can not be installed successfully please reinstall Virtual CD as described in step 3
    
2. If the H+H Virtual CD SCSI Controller is activated:
   Please try to add a virtual drive using the Virtual CD Emulation Settings:
   - Right-click on Virtual CD icon in the SysTray of the task bar -> Settings -> Virtual Drives -> Add… (Virtual CD v10)
   - Right-click on Virtual CD icon in the SysTray of the task bar -> Add/remove virtual drives. Choose a available drive letter, click the expression "available" in the column on the right hand side, then click the drop down arrow and choose "Virtual burner". Finally click OK (Virtual CD v9).
    
3. If the H+H Virtual CD SCSI Controller is activated and no virtual drive can be added using the Virtual CD Emulation:
   Deinstall Virtual CD
   Delete - if existing - the following files
   - infcache.* (Windows 7: %WinDir%\System32\DriverStore\, Windows Vista and XP: %WinDir%\INF\)
   - %WinDir%\INF\*.pnf
   - all driver files(see step 1) according to the operation system and the version of Virtual CD
   - Windows 64 bit only: %WinDir%\INF\vcd10bus.inf and/or the corresponding OEMxx.INF file
   (line 7 of this file is  ";    VCD10BUS.INF")
   Restart the computer
   Install Virtual CD once more

HINTS:

• If the directory %WinDir%\INF is not visible, please select the option "show hidden files and folders" in the Windows Explorer -> "Tools" ->  "Folder Options..." -> "View".
• In Windows Vista and newer please change the file permission of 'infcache.1' to 'Change' at least. Even Administrators have 'Read only' permissions only by default.
• The system renames the INF-files of the setup(in Virtual CD v10: VDRV1064.INF and vcd10bus.inf (64-Bit Windows) respectively VDRV1000.INF (32-Bit Windows)) in OEMx.INF. By default the corresponding file is the latest OEMx.INF-file respectively the "Date Modified"-date is equivalent to the date of the latest installation of Virtual CD.

If this does not solve the problem we need more information to pinpoint the problem, feel free to contact us in our support forum
Please copy

• the exact wording of the error message(s)
• the content of the file ..\Windows\hhdrvi.log
• Windows Vista and newer: The content of the file ..\Windows\inf\setupapi.dev.log
• Windows XP: The content of the file ..\Windows\setupapi.log
• the complete diagnostics including Installation log
  - Right-click on Virtual CD icon in the SysTray of the task bar -> Virtual CD programs -> Show diagnostics -> Options... -> Check 'Installation log' -> OK -> Refresh (Virtual CD v10)
  - Left-click on Virtual CD icon in the SysTray of the task bar -> Settings -> Helper Programs -> Show diagnostics -> Options... -> Check 'Installation log' -> OK -> Refresh (Virtual CD v9)

to the question.respectively