While there are a number of ways to unlock any password-protected Excel sheet, I have a quick, safe way to accomplish this. I advise using the eSoftTools Excel Password Recovery tool as a result. There are three recovery methods available to retrieve or remove difficult passwords from Excel files. Clicking the link provided below will offer you with further information about the software.
If you want to remove the password from your Excel file, the SoftakenExcel Password Remover Tool is a simple and safe option. This tool only removes known passwords and keeps your data safe. No technical knowledge is required; simply select the file and remove the password.