A free program from Microsoft that provides developers with the tools, resources, and sandbox environments needed to build solutions for Microsoft 365.
Based on your description, this issue has also been reported by a number of users recently, and it appears to be related to the current Microsoft 365 Developer Program provisioning experience rather than your organization's configuration.
Regarding your questions:
1.Is a Billing Account now mandatory to provision an E5 Developer sandbox?
For some users, the current Instant Sandbox provisioning experience appears to request a billing account. However, Microsoft's published setup documentation does not list a billing account as a standard prerequisite for obtaining an E5 Developer sandbox.
2.Should the billing account created through the "Create a new billing account" link automatically appear in the selector?
If the billing account is created successfully, it should become available in the Billing account dropdown. If it continues to display "No billing accounts found" after the account has been created, that is not expected behavior and may indicate a service-side provisioning issue.
3.Does this only work with personal Microsoft accounts, or should work accounts also be supported?
Work accounts are supported. Whether a user can provision a Microsoft 365 E5 Developer subscription depends on their eligibility for the Developer Program rather than whether they are using a personal or work account.
You can read more at Microsoft 365 Developer Program FAQ | Microsoft Learn
4.Is this a known issue with the Microsoft 365 Developer Program?
There is no published known issue specifically stating that newly created billing accounts fail to appear in the provisioning wizard. However, similar provisioning issues have been observed by other users, suggesting the issue is likely related to the current provisioning experience rather than your organization's configuration.
5.Is there currently any workaround to provision an E5 Developer sandbox?
If the Configurable Sandbox option is available, using it instead of Instant Sandbox can avoid the billing account prompt. Since you indicated that the Configurable Sandbox option is disabled, there is currently no documented workaround. The best next step would be to contact the Microsoft 365 Developer Program support team so they can investigate the backend provisioning process for your account.
Please note that this is a paid support ticket, which means it requires an active support plan or a one-time support purchase. However, the benefit of using this channel is that your inquiry will be routed directly to the Microsoft Product Group responsible for the specific service or feature in question. This team includes engineers and developers who work on the product itself, so they are best positioned to provide accurate, in-depth, and authoritative answers especially for complex or edge-case scenarios that go beyond publicly available documentation or community knowledge.
Here are some similar threads you can refer to:
- Microsoft 365 developer program's E5 subscription requires me to enter an US address - Microsoft Q&A
- Microsoft 365 Developer Program - only United States selectable when creating billing profile - Mic…
I hope this helps clarify the current behavior.
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