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Harmony Endpoint -- What's New and Deployment
Known issue:
sk105642: Allowed site is blocked on first attempt, then allowed on second attempt
If that isn't it, check the DNS servers defined in the Gaia OS of the gateway. Make sure they are correct and respond promptly when testing them with tools such as dig and nslookup from expert mode; I've seen this effect happen if your DNS servers are responding very slowly.
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