Is the header in a text box? If so, the required sequence is Format | Text
Box | Colors and Lines: No Line.

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Suzanne S. Barnhill
Microsoft MVP (Word)
Words into Type
Fairhope, Alabama USA
Word MVP FAQ site: http://word.mvps.org
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"Julie" wrote in message
...
We have an older document, probably formatted in a former version of
Word...
The header is surrounded by a solid box which we would like to remove. I
have tried all the usual ways - format, borders, none... etc. Nothing
gets
rid of it.