Based on the context provided, it seems that the error message "subscription not created" could be related to a few different Azure services. However, if you are specifically trying to create an Azure subscription through the Startups Founder Hub program, it's possible that you may need to join the Microsoft for Startups program first in order to be eligible for the Visual Studio Enterprise monthly cloud subscriptions that are offered. Once you have joined the program, you should be able to assign the Visual Studio subscriptions to end users before they can run Visual Studio and be recognized as a Visual Studio Enterprise subscriber in Azure DevOps Services. If this does not resolve the issue, you may need to contact Azure support for further assistance.
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