While copying files, Sharegate displays the following message:
Unable to copy your file. This file type is blocked by SharePoint due to security risks.
- Any error code ending in -010
This message is displayed when the destination SharePoint server blocks the copy of a file because it has a restricted extension. This occurs because SharePoint has a built-in list of file extensions which might pose a security risk for your SharePoint environment.
You can either modify the extension of the source file or modify the list of blocked extensions at the destination (for on-premises environments only). You may refer to this article if you wish to alter the list of blocked extensions: view article.