can i upgrade free edition license kentico 8 site to kentico 8.1
Yes, just run the normal upgrade process.
Yes, You can upgrade. Please refer this URL for more info.
as you are not going to upgrade the major version number then yes, it will work as the license key works for any 8.x version of Kentico. So yes, you can upgrade from Kentico 8.0 to Kentico 8.1 without any worries.
Best regards, Martin
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