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ITsVISTA KB-Link: KB950790

Error message when you use the Robocopy command together with the /ZB option to copy data from a file server to a Windows Vista-based or Windows Server 2008-based client: “Error 5: Access is denied”

Consider the following scenario:

  • You have a user account that belongs to the Backup Operators group on a file server.
  • You use this account to log on to a Windows Vista-based or Windows Server 2008-based client computer.
  • On the client computer, you use the Robocopy command together with the /ZB option to copy data from the file server to the client computer.

In this scenario, the operation fails, and you receive the following error message:

Error 5: Access is denied

Notes:

  • When you use the /ZB option, this command uses Restart mode. If access is denied, this command uses Backup mode. Therefore, a user account in the Backup Operators group on a computer can run the command successfully.
  • You can also run this command in Windows XP and in Windows Server 2003.
There is a download that resolves this issue. See Hotfixes for details.
32-bit Download: Contact Microsoft
64-Bit Download: Contact Microsoft

For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB950790.

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