To create this article, volunteer authors worked to edit and improve it over time. Kutools for Excel - Combines more than 300 Advanced Functions and Tools for Microsoft Excel 1. The bottom line is - lock an Excel spreadsheet to prevent other users from accidentally tampering with your data, but never store sensitive information in your Excel sheets. Please do as follows: 1. Choose from the options below for steps on how to apply password protection to a Word or Excel document. So I have a spreadsheet that I want to format based on user inputs, but the cells need to remain locked until it is determined by the formatting that they will be user input cells.
You can lock all the cells in a worksheet or specific cells, allowing some parts of the spreadsheet to be changed. By default, users are allowed to select locked cells. Important: You can even use a to lock and unlock Cells. Select all the cells you don't want to be locked. It is also possible to set a password to prevent users from modifying specific parts of an Excel spreadsheet.
If the worksheet was not protected with password, clicking the Unprotect Sheet button is all it takes to unlock the sheet. However, you can specify whether a cell should be locked or unlocked in the cell's format properties. Objects Making changes to graphic objects — including shapes, text boxes, and controls — unless you unlock the objects before you protect the chart sheet. I'm told that a determined hacker can easily overcome Excel's password protection. Do not recommend to use this option. In the opening Encrypt Cells dialog box, type your password into both Password box and Confirm box, and click the Ok button. Step 2: Select the Review tab and then click on the Protect Sheet.
Even when you protect your Excel worksheet with a password, that password is very easy to break. Wait a few minutes, password will be displayed in a popup windows. All small latin a - z : abcdefghijklmnopqrstuvwxyz. However, we will go ahead and cover the details of how to put it to use here. Also, for future use, you may want to think about adding a simple loop to the protection step: Dim sht as Worksheet For each sht in ThisWorkbook. It's also possible to protect macros in the workbook from being removed or changed. Enable worksheet protection Worksheet protection is a two-step process: the first step is to unlock cells that others can edit, and then you can protect the worksheet with or without a password.
Notice that if you try to edit a cell, Excel displays an error message. This Message is contains the password which can be used to unprotect the other sheets in the same workbook. Using a password allows you to see user credentials of any authorized person who edits the range. Format cells Change any of the options in the Format Cells or Conditional Formatting dialog boxes. Tips: If you choose all characters options, it will definitely increase the possible combinations, so it will take much time to attack a simple password likes 123456.
The program provides four password attack types including Brute-force, Dictionary, Mask, and Smart. When we say workbook, what we are referring to is the Excel file itself. The Allow Users to Edit Ranges dialog box. If you do not supply a password, any user can unprotect the sheet and change the protected elements. Free way to remove password protection from Excel sheets Excel worksheet protection is quite weak even in the recent versions of Excel 2016.
The title isn't particularly important. Also, it lets the users to do the editing in Specific ranges of a protected sheet. However, the workbook wound need a way to decrypt it every time it is needed to calculate a worksheet. But the lock will work only when you enable sheet protection. How to unprotect Excel sheet without password As mentioned in the beginning of this tutorial, Excel worksheet protection is quite weak even in the recent versions of Excel 2013 and Excel 2016.
If you leave only these two options selected, the users of your sheet, including yourself, will be able only to select cells both locked and unlocked. The detail step by step see: , this helps to with this software. Plus, you never have to give out the password that you used to protect the entire worksheet. In this case, unprotecting the sheet takes just a single click on the Unprotect Sheet button on the ribbon or in the sheet tab's right-click menu. Because Microsoft Excel uses a very simple encryption algorithm for worksheet protection.
Password to modify - Similar to , this option allows the file to be viewed, but only users with the password may edit and save the file. Data in the protected cells, worksheet, or workbook cannot be added, changed, or removed. Brute-force with Mask attack Other than the password range and length, if you still can remember part of your pst password, you can select this type and set the Mask. Warning Protecting a single worksheet only covers that specific worksheet. Editor's Note: This tutorial was written for Excel 2016, but still applies to modern versions of Excel. Here is so that the file can be edited even if you have forgotten or lost the password.