The important part of Edwin Tam's process is:
- Quit Excel and Restart Excel.
The settings for macro security do not take effect until you close and restart Excel.
Don't forget to change the setting back to "do not ..." when you are finished working with the workbook or else it will remain in effect on all other workbooks you open later. Allowing any other workbook to have access to the VBA Project creates a very
real security issue.
the problem is i'm not able to check the checkbox bec. it is not accessible, it greyed. i'd tried to restart not only the excel but also my computer but doesn't work.
I do SYSTEM RESTORE. It is ok now. And reinstall all affected program.
Anyhow thanks for your replies.