a dedicated converter tool like the one documented by petermad to turn wincmd.key into a .reg file. Add the key to the registry using the following path: HKEY_CURRENT_USER\Software\Ghisler\Total Commander Value Name: key (binary value).
Here is how to prepare a (or similar method) to handle registration automatically. Method 1: Using wincmd.key in a ZIP File (Easiest Method) Wincmd Key To Reg zip
Use zero compression (store method) when creating the zip file, as TC cannot read compressed keys. a dedicated converter tool like the one documented