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last updated: 2016-12
Note: This information relates to older versions of Xamarin. Community Edition does not require a license, and Professional and Enterprise editions are configured via Visual Studio licenses.
If you do not have internet access on the machine you're trying to activate, you will need to contact Xamarin Support with details of your machine. You can then obtain a license file via your Xamarin store account, provided you have purchased a license.
If you login to https://store.xamarin.com/account/my/subscription/computers and click License next to the machine, you'll get a link to download the license file.
When you receive your license file, you should save it to the appropriate folder in your home directory:
Trial licenses have the word trial added to the filename, eg. License.trial, but otherwise the instructions are the same.
Trial licenses have the word trial embedded in the filename, eg. monotouch.trial.licx, but otherwise the instructions are the same.
Once the license file has been saved to disk, Xamarin.iOS installation and activation should complete successfully.