Go to the "Settings" sheet in the upper part of any MITCalc calculation module.
Ensure your computer’s system date is set correctly, as the software uses this to verify license validity. Troubleshooting Common Issues mitcalc authorization code link
: If you are using the 30-day trial, you do not need an authorization code; the software remains fully functional until the trial period expires. Go to the "Settings" sheet in the upper