The best and most secure tool is eSoftTools Excel Password Recovery Software. Which can recover password-protected XLSX files quickly and easily. There are three password recovery options, all of which are error-free and completely secure. This tool
supports all Excel file versions and windows operating systems. You can use this software to recover any type of complex password using any process. Furthermore, this tool has a free demo pack that you can use without purchasing the tool.
Read more -
https://www.esofttools.com/blog/recover-xlsx-file-password/
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