Hello @Matt
Thanks for the question and using MS Q&A platform.
Currently the HDInsight Cluster is not available under the Azure free trial / Student / Pass subscription.
For more details, refer Azure Free Trial - FAQ.
Reason: Azure Free Trail has a limit of 4 cores, and you cannot create HDInsight cluster using a Free Trial Subscription because it requires more than 8 cores.
You need to upgrade to a Pay-As-You-Go subscription to create Azure HDInsight clusters.
Note: Free Trial subscriptions aren't eligible for limit or quota increases. If you have a Free Trial subscription, you can upgrade to a Pay-As-You-Go subscription
Similar threads for reference: Unable to Create HDInsight(spark) cluster
Can't create HDInsight Cluster
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