You can control access to a document by implementing a password for it. Passwords are case-sensitive and can be a maximum of 15 characters long. Create a strong password, ideally one that you can …

How to protect an Excel file using a password to prevent unwanted access to your data.

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. …

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.

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 …

You can add a password so that only authorized users can modify a presentation. Unauthorized users can still open the presentation and then save it by using a different file name.

You can protect the Excel file by specifying two passwords: one to open, and the other to modify. You can later share the appropriate passwords with the team depending on the access they should be …

Removing a password from a document is a simple process, but you have to know the original password. Open the document and enter its password. Go to File > Info > Protect Document > …

Password-protect project files to make them read-only or prevent others from opening them at all. You can set a password when you save the file.

Protect your most important files in OneDrive Personal Vault with an extra layer of security. Learn how to set up, lock, or unlock Personal Vault.