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  1. Require a password to open or modify a workbook

    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. …

  2. Protect a workbook - Microsoft Support

    Add a password to protect your entire workbook and control whether others can open or make changes to it. Protect your file by setting passwords for Open and Modify.

  3. Protect an Excel file - Microsoft Support

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

  4. Protection and security in Excel - Microsoft Support

    Workbook-level: You can lock the structure of your workbook by specifying a password. Locking the workbook structure prevents other users from adding, moving, deleting, hiding, and renaming …

  5. Protect a worksheet - Microsoft Support

    To help improve your privacy in Excel, a password adds protection to worksheets to help prevent others from changing, moving, or deleting important data.

  6. Change or remove workbook passwords - Microsoft Support

    To add a new password, click Protect Sheet or Protect Workbook, type and confirm the new password, and then click OK. To remove a password from the workbook, click Protect Workbook, and then click …

  7. Lock cells to protect them in Excel - Microsoft Support

    Suppose you want to protect an entire workbook, but also wants to be able to change a few cells after you enable that protection. Before you enabled password protection, you can unlock some cells in …

  8. Protect an Excel file - Microsoft Support

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

  9. Restrict changes to files in Excel - Microsoft Support

    If you don't want content reviewers to accidentally change a Word document or an Excel spreadsheet, you can use formatting and editing restrictions. Note: To further restrict reviewers from making …

  10. Protect a worksheet in Mac - Microsoft Support

    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.