Maybe this format for the cell(s) would help:
(Not sure what version of excel you are using...)
Format Cells, Number, Custom, edit the format to:
00:00:00.00
This will show leading zeroes for Hours:Minutes:Seconds if they are ZERO, (which is what I understand that you are wanting?)
Edit-
OR
hh:mm:ss.00
as my first suggestion seems to fail![]()
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