The LicenseKey stored here is often encrypted or hashed . You cannot simply copy the garbled text from this file and paste it into a new installation of MobaXterm. That string is specific to your machine's hardware hash or the installation ID. Moving the INI file directly is the intended method, not copying the key string.
If you have purchased a Professional license and are struggling to find where to input it, or if you need to migrate it to a new PC, this guide is for you. mobaxterm professional license key location
If you installed MobaXterm using the standard installer (MSI or EXE), the configuration file is usually found here: The LicenseKey stored here is often encrypted or hashed
But the golden rule is this: That encrypted data is useless for a fresh install. Your license key is a string of characters sent to you via email by MobaTek. Moving the INI file directly is the intended