The sheet is probably protected ..

Click Tools > Protection > Unprotect sheet
(you may need a password to unprotect)
--
Max
Singapore
http://savefile.com/projects/236895
xdemechanik
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"xela" <xela@discussions.microsoft.com> wrote in message
news:0C6592F8-3233-4AF1-AF44-09FD700D3B1E@microsoft.com...
> rows 1 to 17 are visible the next row is 16345
> the thick grey line shows between rows 17 and 16345
> however unhide is greyed out and does not allow me to unhide
> thousands of rows