Hi Ahmed Samy,
Greetings from Syncfusion support.
We have checked and considered the reported scenario “Unable to rename a file or folder with the '&' character in its name in the Blazor FileManager component” as bug on our end. The fix for this issue will be included in the weekly patch release scheduled for March 25, 2025.
You can track the status of the fix through the following link.
https://www.syncfusion.com/feedback/66196/unable-to-rename-a-file-or-folder-with-the-character-in-its-name-in-the-blazor
Disclaimer: Inclusion of this solution in the weekly release may change due to other factors including but not limited to QA checks and works reprioritization.
Regards,
Prasanth Madhaiyan.