Upd - Mitcalc Authorization Code

If your code is lost or not working after a reinstall, contact sales@mitcalc.com or orders@mitcalc.com for a replacement.

MITCalc notifies users of license expiration through the Authorization dialog. To update an existing installation with a new code (renew), the process is identical to the initial authorization: receiving a new code via email and entering it into the dialog.

: If the authorization box is grayed out or unselectable, you may be trying to use a "full version" code on a "stand-alone calculation" module or vice versa. In this case, ensure you have the correct software version installed as specified in your authorization email. For further technical issues, you can contact MITCalc Support mitcalc authorization code upd

: Macros are not working or you see a VBA error message when activating radio buttons.

Copy the new 20-25 character alphanumeric code. Open MITCALC, go to License > Enter Authorization Code UPD , paste the code, and click “Activate.” If your code is lost or not working

While you are within your valid license period, you have full access to all corrective patches and new versions released by the producer. These can be downloaded directly from the official MITCalc website or through approved partners. Authorization Continuity

If you run into errors while trying to update your software or enter your authorization code, keep the following checklist in mind: : If the authorization box is grayed out

Visit the official MITCALC support page → “Authorization Code UPD Request Form.”

If you cannot open the authorization dialog, the MITCalc add-in may not be loaded properly in Excel. Re-run the installation ( mitcalc.xla ) via the Windows Start Menu, or manually add it via Excel File > Options > Add-Ins > Go... > Browse .