my customer is getting this message:

The software worked fine for 7 months and suddenly he received this message when he open the workbook.
He claims he didn’t change anything on his computer.
I’m useing “Save changes automatically and load them without prompt next time” so he is not running any “saves point in time”…
please tell me what to do.

The software worked fine for 7 months and suddenly he received this message when he open the workbook.
He claims he didn’t change anything on his computer.
I’m useing “Save changes automatically and load them without prompt next time” so he is not running any “saves point in time”…
please tell me what to do.
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