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You do not need to wait for the SMS quota increase request to be processed before enabling the Microsoft Authenticator app. These are independent actions:
- Quota increase request: Submit through the Azure support portal if you want to maintain SMS as a backup method. This ensures users who rely on SMS can still authenticate until they transition.
- Microsoft Authenticator app: You can enable and configure it immediately as the primary MFA method. Users can register the app during sign‑in or via the security info page, reducing dependence on SMS. Recommended Approach.
- Enable Microsoft Authenticator now as the default MFA method. This improves security and avoids SMS quota limits.
- Submit the SMS quota increase request in parallel, so SMS remains available as a fallback until all users have migrated.
- Communicate to users that Authenticator is the preferred method and provide guidance for setup. References.
Set up the Microsoft Authenticator app (learn.microsoft.com in Bing)
Azure MFA methods and configuration (learn.microsoft.com in Bing)
Request service quota increases in Azure (learn.microsoft.com in Bing)
Note: You can enable Microsoft Authenticator immediately while the SMS quota increase request is pending. Doing both in parallel ensures continuity for users and reduces reliance on SMS.
I hope this helps to better understand the diagnostic options available and the risks involved.
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