On Thursday, November 21, 2013 12:12:07 PM UTC-5, wrote:
Hello,



I have a workbook.xlsm that when some users open the workbook Excel complains that the Marcos are corrupt and then proceeds to strip out all the Macros from the workbook. I am able to open the file in 2010 and 2013 without any issues.

In both instances the users had a computer that had a fresh install of both windows and Excel.



Any insight would be greatly appreciated.



Thanks,

Michael

Thanks joeu2004,

I saw the error messages about the corrupt macros, the security is set for "Disable .... with notification" In both instances Office 2013 was installed first and then the users downgraded to 2010.