This wikiHow teaches you how to remove the password from a protected Excel spreadsheet, as well as how to attempt to find out the password for an encrypted Excel file. Keep in mind that, while removing the password from an editing-locked...
Method 1 of 2:
Removing Password Protection from a Sheet
Understand the conditions under which you can do this. If only the Excel sheet is protected—that is, if you can open the Excel file and view its contents but not edit it—then you can use this method to remove the password protection on both Windows and Mac computers.
Check to see if the Excel file is encrypted. The easiest way to do this is by double-clicking the Excel file; if the file opens like usual when you double-click it, the sheet is protected but the file is not.
Make a copy of the protected sheet. Click the Excel file that contains the sheet you want to unprotect, then press Ctrl+C (Windows) or ⌘ Command+C (Mac) and paste it elsewhere by pressing Ctrl+V (Windows) or ⌘ Command+V (Mac).
Enable file extensions. Skip this step on a Mac. If you're using a Windows computer, you'll need to make sure you can view and change file extension names by doing the following:
File Explorer (or press ⊞ Win+E).
Change the Excel file into a ZIP folder. To do so:
Extract the ZIP folder. This process will vary depending on your computer's operating system:
Open the "xl" folder. Double-click this folder in the extracted folder to do so.
Open the "worksheets" folder. It's near the top of the "xl" folder.
Open the sheet in a text editor. Depending on your computer's operating system, do one of the following:
Remove the password protection code. Find the "sheetProtection" section that's inside the "" brackets, then delete everything from "") on the other side of the sheet protection algorithm.

Save your changes and close the text editor. Press either Ctrl+S (Windows) or ⌘ Command+S (Mac), then click the X (or red circle on a Mac) in the corner of the text editor.

Copy the "worksheets" folder. Click the "Back" button to go back to the "xl" folder, then click the "worksheets" folder and press either Ctrl+C (Windows) or ⌘ Command+C (Mac).

Open the ZIP folder. Double-click the ZIP folder that you created earlier.

Replace the ZIP folder's "worksheets" folder with your copied one. Navigate to the ZIP folder's "worksheets" location by double-clicking the "xl" folder, then delete the "worksheets" folder, click a blank space in the current folder, and press either Ctrl+V (Windows) or ⌘ Command+V (Mac). This will paste the copied "worksheets" folder into the ZIP folder.
Change the ZIP folder back into an Excel file. Close the ZIP folder, then do one of the following:
Open your Excel sheet. Double-click the Excel sheet, then edit it as needed.Method 2 of 2:
Cracking an Excel File Password
Understand that it may be impossible to crack the password. Modern versions of Excel, such as Excel 2013 and 2016, use advanced encryption techniques which make brute-force methods used by most password crackers virtually useless due to how long the password can take to crack (anywhere from weeks to years depending on the password strength).
Make sure your Excel file is protected. If your Excel file truly is encrypted, double-clicking the Excel file will prompt you for a password before you can view the file's contents.
Purchase an Excel password cracker. Since the password can't be removed from the Excel file, you'll need to use a paid program to find the password so that you can enter it.
Install and open the password cracker. This process will depend on both the program and your computer's operating system, though in most cases you'll download a setup file, double-click it, follow the on-screen instructions, and then open the program once it finishes installing.
Select your Excel file. Using the password cracker's interface, find your Excel file, click it to select it, and click Open or Choose.
Run the password cracker. If necessary, click the Start or Run button in the password cracker window to begin cracking your Excel file's password.
Wait for results. Unfortunately, brute-force attacks can take anywhere from a few hours to a few months to crack your Excel file's password. Depending on the contents of the Excel file, it might be necessary to abandon your efforts if you haven't found the password within a day or so.Update 05 March 2020
ncG1vNJzZmismaXArq3KnmWcp51ktbDDjK2mZqegmrturYypmKyrp6S%2FpXnPq6atnZOpsqV5xLGanqRdm7atsQ%3D%3D