Hi Catalin,

Or maybe I misunderstood. If it's just the Excel 'error checking' message, the multiply by 1 operation may indeed resolve the issue. Frankly, if that's all it is and unless the affected 'numbers' need numeric evaluation, I wouldn't even bother. I have one workbook in which every 2nd cell has an 'error checking' message of one kind or another.

As for turning off Excel 'error checking' function, that can certainly improve workbook performance (and delete any distracting messages). Unfortunately, it's also an application-level function that affects all workbooks, not just the one that's active at the time.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]