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Change data validation settings

1. If the workbook is shared, stop sharing it.

   How?

   1. Have all other users save and close the shared workbook. If other users are editing, they will lose any unsaved work.
   2. Unsharing the workbook deletes the change history. If you want to keep a copy of this information, print out the History worksheet or copy it to another workbook.

      How?

      1. On the Tools menu, point to Track Changes, and then click Highlight Changes.
      2. In the When box, click All.
      3. Clear the Who and Where check boxes.
      4. Select the List changes on a new sheet check box, and then click OK.
      5. Do one or more of the following:
         • To print the History worksheet, click Print .
         • To copy the history to another workbook, select the cells you want to copy, click Copy , switch to another workbook, click where you want the copy to go, and click Paste .

         Note  You may also want to save or print the current version of the workbook, because this history might not apply to later versions. For example, cell locations, including row numbers, in the copied history may no longer be current.

   3. On the Tools menu, click Share Workbook, and then click the Editing tab.
   4. Make sure that you are the only person listed in the Who has this workbook open now box.
   5. Clear the Allow changes by more than one user at the same time check box.

      If this check box is not available, you must unprotect the workbook before clearing the check box.

      How?

      1. Click OK, point to Protection on the Tools menu, and then click Unprotect Shared Workbook.
      2. Enter the password if prompted, and then click OK.
      3. On the Tools menu, click Share Workbook, and then click the Editing tab.
   6. When prompted about the effects on other users, click Yes.
2. If the worksheet is protected, unprotect it.

   How?

   Remove user permissions for a range

   1. Switch to the protected worksheet.

   2. On the Tools menu, point to Protection, and then click Unprotect Sheet.

   3. If prompted, enter the protection password for the worksheet.

   4. On the Tools menu, point to Protection, and then click Allow Users to Edit Ranges.

   5. In the Ranges unlocked by a password when cell is protected list, click the range for which you want to remove permissions.

   6. Click Delete.

   Remove protection from a worksheet

   1. Switch to the protected worksheet.

   2. On the Tools menu, point to Protection, and then click Unprotect Sheet.

   3. If prompted, enter the protection password for the worksheet.

   Remove protection from a workbook

   1. Open the protected workbook.

   2. On the Tools menu, point to Protection, and then click Unprotect Workbook.

   3. If prompted, enter the protection password for the workbook.

   Remove protection from a shared workbook

   Removing protection when a password is in use also unshares the workbook, disconnecting other users from the workbook and erasing the change history. If no password is in effect, the workbook remains shared after you unprotect it.

   1. Open the protected workbook

   2. On the Tools menu, point to Protection, and then click Unprotect Shared Workbook.

   3. If prompted, enter the password for the workbook.

   4. If prompted about the effects on other users of removing protection, click Yes.

   Remove the password for viewing or editing a workbook file

   1. Open the workbook.

   2. On the File menu, click Save As.

   3. On the Tools menu, click General Options.

   4. In the Password to open or Password to modify box, or both boxes, double-click the asterisks and then press the DELETE key.

   5. Click OK, and then click Save.

   6. Click Yes to replace the existing workbook.

3. Click a cell that has data validation settings you want to change.
4. On the Data menu, click Validation.
5. On each tab, select and change the options you want.

   If you want the same changes for other cells on the worksheet, select the Apply these changes to all other cells with the same settings check box on the Settings tab.

Note  You cannot change the data validation for cells in a list that is linked to a SharePoint site.