Hi there,
You can't delete a file if the file uses an Access Control List (ACL). To resolve this issue, change the permissions on the file. You may have to take ownership of the files to change the permissions.
You can also delete a file if the file is being used. To resolve this issue, determine the process that has the open handle, and then close that process.
You can't delete a file or a folder on an NTFS file system volume
https://learn.microsoft.com/en-US/troubleshoot/windows-server/backup-and-storage/cannot-delete-file-folder-on-ntfs-file-system
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