Excel determines the calculation mode from the first workbook opened in that
session.

It sounds like you may have changed it once and expected it to stay set that way
forever.

I'd open a workbook and check that calculation setting once more.



RodShaw2 wrote:

Sorry I should have been a bit more clear. None of the workbooks or
worksheets on that computer will automatically caculate.

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RodShaw2

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Dave Peterson