Here is a nice tool for when you receive an Excel sheet by email and it is locked for editing. Your employer or whoever sent you the form may have locked it so you can’t make any changes to it and only print it. This wonderful tool was made by David R. Heffelfinger and is free to the public and the best part of it is that no download is required at all, it works on the web.
Microsoft Excel allows a user to protect one or more sheets in a spreadsheet. Protected sheets cannot be modified without entering a password (chosen by the person that protected the spreadsheet). Sometimes these passwords are lost, therefore protected spreadsheets are permanently locked. This page contains a free online utility that allows you to upload an Excel spreadsheet and unlock any protected sheets in the spreadsheet.
To unlock an Excel spreadsheet, enter it’s location in the “XLS file to unlock” field, by either typing it in the field or clicking on the “browse” button, then navigating to it’s location.
The unlocked version of the spreadsheet will be displayed in a new browser window, and automatically opened in Excel if it is installed in your system. Otherwise the unlocked spreadsheet can be downloaded to your local hard drive.
The terms and conditions must be accepted to unlock the Excel spreadsheet.