If the text container remains unselectable or gray, a version mismatch is likely present. This happens if you try to apply a full system authorization code to a single independent calculation module, or vice-versa. To resolve this, download the official ( MITCalc_Authorization.xls ) from the MITCalc Support Center . Run the utility, manually choose the license tier that matches your contract, and execute the paste command. 2. Invalid Key Messages
The exact that displays when you attempt the update?
Whether you are using a license or a Network/Multi-Seat deployment? Pricelist and Purchase - MITcalc
This comprehensive guide breaks down how the license update system works, step-by-step instructions for entering a new code, and how to resolve common authorization errors. When Do You Need a New Authorization Code?
A fresh installation of Windows can sometimes alter how the hardware layer interacts with Excel, necessitating a license update.
MITCalc displays a warning dialog 30 days before expiration . To continue working past this date, a renewal code must be submitted.