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Find training and tutorials for office 365 and office apps including outlook onenote word excel powerpoint skype for business and more. Edit article how to lock cells in excel two methods locking and protecting cells in excel 2007 and excel 2010 locking and protecting cells excel 2003 community qa locking cells in an excel spreadsheet can prevent any changes from being made to the data or formulas that reside in those particular cells. Microsoft excel is by far the most used application for data analysis mastering excel is a must have skill in many companies it can also be a huge time saver. Here you will find daily news and tutorials about r contributed by over 750 bloggers there are many ways to follow us by e mail