Fix: VDS Basic Provider Error code 490@01010004 in Event Viewer on Windows 7

Lets say you have a Hyper-V guest operating system that is running Windows Server 2008 R2 or Windows 7 and it has a disk that is connected to a SCSI controller. Now if you receive error Unexpected failure. Error code: 490@01010004, then this article may help you.

Error code 490@01010004

You might see this error message in the Event Viewer.

There is a KB979391 that ONLY explains why this happens, but no actual fix mentioned in that article. It’s been reported in a few forums, that issue can be resolved by reinstalling your Virtual drive software like Alcohol 120%, DAEMON Tools Lite etc.

One thing you have to remember is after you remove the software, there is a good chance that it may leave the SPTD.sys driver behind. This driver is notorious on Windows 7 for causing frequent crashes including the Blue Screens.

There is an uninstaller tool that’s available that will help you in removing it. Download the application from here. Run the application, then click on Uninstall to remove it.

Reboot your computer to take effect.

Alternatively, you can go to use the registry method to disable it:

  • Go to Start under search type in Regedit
  • Then go to HKEY_LOCAL_MACHINE\System\CurrentControlSet\ Services\sptd
  • In Right side panel you’ll DWORD Start value to 4 and reboot the machine once.

Hope this helps someone.

Posted by on , in Category Windows with Tags
Shyam aka “Captain Jack” is a Microsoft MVP alumnus and a Windows Enthusiast with an interest in Advanced Windows troubleshooting. Suggestions made and opinions expressed by him here are his personal one's and not of his current employers. He blogs at


  1. One Computer Company

    Thanks a lot for this was very helpful indeed. I had installed the Virtual Clone Drive app.


    For the record, I have Virtual Clone Drive as well. I just posted on the Slysoft/Virtual Clone Drive sub-forum.

  3. C Yeowell

    I have had same error message on a Windows 2008 R2 Server Host with Virtual Clone Drive installed. The driver was in a different service HKEY_LOCAL_MACHINESystemCurrentControlSetServicesVClone

  4. Hitesh

    thanks … since last two days , my pc was giving a system and used to hang for 1 or two minutes… searched everywhere and found the solution here :)… in event manager .. it gave me even scary messages of bad blocks on disk…. which finally zeroed in to CloneCD software, which was acting nasty.. removed /Resolved … Thanks a Bunch

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