Update not applicable trying to update your (european) Surface RT to 8.1 Preview?

quick fix:

– make sure you have the English language installed check language / your default language set to English US / check options, ‘windows display language’ states should be enabled.(if not select the download option)

– in HKey_Local_Machine/System/CurrentControlSet/Control/Nls/Language change the string “InstallLanguage” to 409
– restart your Surface, and retry the update for http://preview.windows.com

The update will now install and after reboot you’ll be notified to update to 8.1 via the Store.

Mind this does take a while, but it’s worth the wait 🙂

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