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Microsoft office excel security problem

FCCAdmin asked
I try to open a excel file and I get this error microsoft office has identified a potential security concern this seems to be only happening to one of our files. it goes on to state something about the automatic updates of links. it ask me to enable or disable the links I have included the exact error in the attachment. after I say enable or disable nothing comes up it's as if I never opened it. This is a file on our network that was created by our users so it should be trusted unsure why this started but it seems to have started on a wednesday I am unsure if an update or something caused this I am yet to find out what was released on Wednesday I am still investigating. Thanks for any help you can provide.
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Most Valuable Expert 2011
Top Expert 2011
That just means that the file links to data in another workbook. It's not really an error.