The Definitive 'Locked File' Post (updated 7/7/2014)

Any veteran of Excel has probably seen the error very similar to the one below:   File in Use  Tester123.xlsx is locked for editing  by 'another user'.  Open 'Read-Only' or, click 'Notify' to open read-only and receive notification when the document is no longer in use. Example: Dealing with this can give anyone a major…