Unsupported Symbols in Filenames (code 3009)

Applies to the legacy backup format only


Upon a backup plan execution, the following error occurs: Unsupported symbols in filenames.


Filenames in backup source contain unsupported symbols by the cloud storage. They may differ depending on which cloud provider is used.


There are several basic methods to solve the issue.

Create The Backup Plan in New Backup Format

Create the new backup plan in Backup Agent(standalone users/managed backup users) or in Management Console for the same scope (files and folders) in new backup format. Reshedule the original files backup plan. On the Schedule step, select to run this plan manually. It is possible to convert (upgrade) plan in legacy backup format to the new backup format as described here by means of CLI command.

Use Image-based Backup Type Instead of File-level Backup

To learn more about the image-based backup, refer to the Image-Based Backup section of the help documentation.

Rename Files Containing Unsupported Symbols

Renaming files with unsupported symbols can appear as the easiest solution to this issue.

Note that unsupported symbols are storage-sensitive

To learn more about different storage limitations: