Excel has detected that ‘somefile.csv’ is a SYLK file, but cannot load it.

September 9, 2009

I am writing some software that generates CSV files to be opened by the default CSV application on the system. I just spent about 30 minutes troubleshooting this MS Excel 2007 error when opening one of my CSV files: “Excel has detected that ‘somefile.csv’ is a SYLK file, but cannot load it. Either the file [...]

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