How to enable the Add-Ins of Dynamics AX in Ms Excel

Hi,

During uploading General journal entries into GL in AX, I accidentally clicked Yes when I saw a message saying about add-ins of Dynamics AX. This action made the tab Dynamics AX disappears in Ms Excel. Going to Ms Excel Option, I see that add-ins (Dynamics AX) is disabled. Please help me to re-enable that add-ins.

Thanks

Thai