How do I permanently lock an Excel spreadsheet?

Protect an Excel file

1. Select File > Info.
2. Select the Protect Workbook box and choose Encrypt with Password.
3. Enter a password in the Password box, and then select OK.
4. Confirm the password in the Reenter Password box, and then select OK.

Can you lock a sheet from being opened in Excel?

Open the sheet or workbook that you want to protect. On the Review tab, click Protect Sheet or Protect Workbook. In the Password box, type a password, and in the Verify box, type the password again. Choose any other protection options you want and click OK.

Why is my Excel sheet not locking?

if some of your cells are getting locked and other are not, then go to Review ribbon, then click on menu option ‘Allow users to edit ranges’ which is toward the end on top right hand side. If there are any cells ranges mentioned there delete them all. Basically any cells in those ranges will not get locked.

How do I password protect a Word 2003 document?

Click OK

1. Open the document for review.
2. From the Tools menu, select Protect Document… The Protect Document dialog box appears.
3. In the Password text box, type a password.
4. Click OK. The Confirm Password dialog box appears.
5. In the Reenter password to open text box, type the password for confirmation.
6. Click OK.

How secure is Excel password protection?

The encryption algorithm was not strong enough and had multiple vulnerabilities, rendering it unusable. As Microsoft Office now uses AES-256, you can rest assured that the password protection on your Excel spreadsheet is trustworthy and impossible to break using current technology.

How do I lock a column in Excel?

To lock one row only, choose the View tab, and then click Freeze Top Row. To lock one column only, choose the View tab, and then click Freeze First Column. To lock more than one row or column, or to lock both rows and columns at the same time, choose the View tab, and then click Freeze Panes.

How do you lock a read only Excel File?

Open the workbook that you want to protect. On the Review tab, under Protection, click Passwords. In the File Passwords dialog box, select the Read-only recommended check box, and click OK. Close the workbook.

How do I lock and hide a sheet in Excel?

Unless the workbook structure is password protected, any hidden sheet can easily become visible again. To hide a sheet: Right click the sheet tab & select Hide. Excel has two levels of hidden sheets, hidden and very hidden sheets.

How do you hide a sheet in Excel and lock it?

Enable worksheet protection

1. In your Excel file, select the worksheet tab that you want to protect.
2. Select the cells that others can edit.
3. Right-click anywhere in the sheet and select Format Cells (or use Ctrl+1, or Command+1 on the Mac), and then go to the Protection tab and clear Locked.

How to unlock a locked Excel spreadsheet?

How to Unlock Excel files. Upload your Excel files to unlock. Enter the protection password. Press the “UNLOCK” button. Download the unlocked files instantly or send a download link to email. Note that file will be deleted from our servers after 24 hours and download links will stop working after this time period.

How do you lock a spreadsheet in Excel?

Select the cells you want to lock. On the Home tab, in the Alignment group, click the small arrow to open the Format Cells popup window. On the Protection tab, select the Locked check box, and then click OK to close the popup.This means that the cells are ready to be locked when you protect the workbook or worksheet.

How to unlock an Excel spreadsheet efficiently?

Rename the Excel file by changing its extension.

How do you password protect an Excel spreadsheet?

To password protect an Excel file, execute the following steps. 1. Open an Excel file. 2. On the File tab, click Save As. 3. Click Browse. 4. Click on the Tools button and click General Options. 5. In the Password to open box, enter a password and click OK. 6. Reenter the password and click OK.