Unable to delete files using Fed search.

This article explains an issue where an admin is unable to delete endpoint-backed up files using Fed Search.

The admin attempts to delete endpoint files via Fed Search to remove them from both the source and the snapshot. However, during the deletion process, the following error message is displayed:
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“Unavailable checksum. File was backed up using an older version of the client.”

This issue occurs because the files were originally backed up using inSync Client version 5.9.5 or earlier. These versions did not support capturing file checksums during backup. The checksum is required for the client to correctly identify and locate files for deletion within the workflow.

Since the checksum was not captured when these files were backed up, deletion through Fed Search is not possible for them. File deletion via Fed Search is supported only with inSync Client v5.9.5 or later.

Reference: Defensible Deletion of Files and Emails | Druva | Documentation