If you have no idea about your password, then you can only use brute force attack mode to find your password. In this case, we will scan your password in our built-in list. So, it will take some time to recover the password.
If you have installed WPS on your computer then you need to change the WPS settings, please check the guide here to know more.
You should choose Remove Excel password to remove the restriction password. With a few minutes, your worksheet will be unprotected.
Because the version of Office 2003 and 2007 is unstable, we therefore recommend that you first convert the xlsx document to xls format, or go to remove it in an office environment of 2007 or above.
