Microsoft Excel lets you embed content from other applications, including PDF files. You can embed a PDF file into a cell of an Excel worksheet and then use Excel's security features to lock the ...

To fix the Unknown error trying to lock file in Teams, Excel, OneDrive, PowerPoint, SharePoint, etc, Office apps use these proven solutions.

We show you how to protect a worksheet in Excel, as well as how to lock specific cells and formulas in Excel from editing or formatting.

How to Have Excel Freeze Row and Column Data It's often useful to freeze header rows or columns in Excel while navigating through a spreadsheet.

In this guide, we'll walk you through how to add a header of footer in Excel so you can start making your sheet look more organized.

You can add a header and footer to Excel, and in this guide, we'll show you how.

Did you encounter an unknown error trying to lock file? Do not panic. Just hop on this article to troubleshoot the problem.