16243: Acronis Backup & Recovery 10 Online: Backup of Network Share to Online Storage Fails

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Last update: 08-07-2011

This has been fixed

This article applies to:

  • Acronis Backup & Recovery 10
  • Acronis Backup & Recovery 10 Online

If you are using Acronis True Image Home Online Backup, see Acronis True Image Home: Acronis Online Backup Does Not Support Mapped Drives and Network Shares.


  1. You create a backup task to back up data from a network share or mapped drive to Online Storage or Initial Seeding;
  2. Backup starts, but then fails with the following message:

    Error occurred while opening the file.

    The filename, directory name, or volume label syntax is incorrect.


Issue in the product.


This has been fixed in Build 13544 and higher. The fix is available in the latest build of the product. See Installation of the latest update of an Acronis product.

More information

Contact Acronis Support if you have any questions or need assistance.