To activate the full version of (Mechanical, Industrial, and Technical Calculations), you must use an Authorization Code
Manual Uninstallation: If you encounter errors like "Cannot find mitcalc.xla" after an update, you may need to manually remove the old add-in via Excel Options > Add-Ins > Manage: Excel Add-ins > Go.
When you purchase MITCalc from the official website (www.mitcalc.com), you receive a legal authorization code. The process is straightforward: authorization code for mitcalc
Validity: The license is generally valid for one year, after which renewal may be required.
Submit the form. The system will generate and email your code. Enter the Code: Copy the Authorization Code from your email. To activate the full version of (Mechanical, Industrial,
Excel Settings: Since MITCalc is Excel-based, your Excel Trust Center Settings must allow the launching of VBA applications (Macros). Troubleshooting and Support
Validate: Click the "Authorize" button. If successful, the dialog will show how many days are left until your next renewal (typically one year for subscriptions). Common Troubleshooting Tips Submit the form
How to Obtain an Authorization Code for MITCalc
If you truly cannot pay, consider these free (but less powerful) alternatives: