And the linked cells for those check boxes are part of the range of
cells that the designated users are able to edit? Are you having one
of those users test it or are you testing it yourself? I believe that
if you did not include yourself in the list of users that are able to
edit those cells, it won't allow you to edit them once the sheet is
protected. Otherwise, I am not sure what it could be. I am sure
someone in this group can offer up other suggestions though.

HTH
Steve


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