Dec 14, 2009
There is probably a really easy answer to this question but I cannot seem to figure it out. I need to calculate the sum of pages faxed on a fax report at my office on an excel spreadsheet which is downloaded from our server. It appears the file is not meant to be used in excel but it downloads as an "*.xls" file anyway. When I open the file I receive this message:
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"The file you are trying to open, 'FaxCetailReport.xls', is in a different format then specified by the file extension. Verify that the file is not corrupted and is from a trusted source before opening the file. Do you want to open the file now?"
The file is comnig from a trusted source so I select "Yes" and it opens just fine. There are just over 50 rows of info, one of them being the number of pages. In a blank cell I enter "=SUM(select rows)" and the result is a "0". I have converted the cells to the "number" format, no change. When I right click on the cells and select format, the protection tab on the right has the check box "Locked" checked and unchecking it does nothing, it is checked as soon as you go back in to the protection tab.
The only way around this is to manually retype the numbers in a cell next to the pages column, which is ok for 50 numbers, but I have some sheets where there is over 1,000 entries.