Some Office users have recently experienced “Unknown error trying to lock file” while using Office apps like Excel, Teams, OneDrive, PowerPoint, etc. It’s even ...

A recommended approach to secure your most private documents — whether it’s a PDF, Word file, or Excel spreadsheet — is to lock them with a passcode. While this does help keep sensitive content safe, ...

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 ...