Your phone number did not pass security checks E5 Sandbox

Question

Your phone number did not pass security checks E5 Sandbox

Drew Inkster 25

I have been trying to set up MY E5 subscription in my Microsoft 365 Develepor program account and it will not accept any phone numbers for the verification when setting up the sandbox.

We can't continue with the signup process for the following reason:

Your phone number did not pass security checks.

MS-CorrelationId: 00000000-29ae-47e7-8e96-60ed682b094a

Code: 40321

I have tried chatting with support and they were able to verify that my phone number should work. I also tried 5 different US phone numbers and one from Spain. It seems to be a common issue with many post on here but no solutions.

Leon Pavesic 85 Reputation points

2023-06-21T12:07:42.6566667+00:00

Hello Drew,

If you have already contacted Microsoft Support and haven't found a solution for the phone number verification issue with setting up your E5 subscription in the Microsoft 365 Developer Program account, here are a few alternative options you can consider:

Try a different device or network: Sometimes, issues with phone number verification can be related to the device or network you're using. Try using a different device or network connection to see if the problem persists. It's possible that the issue is specific to your current setup.

Reach out to the Microsoft 365 Developer Program support: In addition to Microsoft Support, you can also try reaching out to the specific support channels available for the Microsoft 365 Developer Program. Visit the Developer Program website or community forums to see if there are any dedicated support channels or contact options available for program-related issues.

Connect with the Microsoft 365 Developer Program community: Engage with the Microsoft 365 Developer Program community, such as forums or discussion boards, where you can share your experience and seek assistance from other developers who may have encountered similar issues. They may be able to provide insights or workarounds based on their own experiences.

Consider alternative developer subscriptions: If the phone number verification issue persists and you're unable to resolve it, you can explore alternative options for obtaining developer subscriptions or sandbox environments. There are other platforms and services available, both from Microsoft and third-party providers, that offer developer programs with access to similar functionalities and environments.

Contact Microsoft Azure support: Depending on the specific features and services you require for your development work, you might consider exploring Microsoft Azure subscriptions and related support options. Azure provides a wide range of cloud services that can be leveraged for development purposes. Azure support may have additional insights or alternatives to address your requirements.

4 answers

Your answer

Answer 1

Drew Inkster 15

For anyone in the future, make sure you are on a proper internet connection. I was trying on a 4g hot spot and mobile and it never worked. First time I tried on a WiFi/fiber connection it worked using the same number. I

Bill Xu 31 Reputation points

2023-08-01T07:26:36.8433333+00:00

Great!

I switched network to my 5G hotspot, and it worked!!

Maybe M365 is using your IP address to validate the application...
Adams A 0 Reputation points Microsoft Employee

2025-03-17T12:23:16.2866667+00:00

It worked for me just as you said, thanks @ Drew Inkster

Answer 2

Hello @Drew Inkster ,

other users describe the same problem. To fix the problem, I recommend you to open a ticket at Microsoft Support.

You can get more information from already existing entries:

If this is helpful, please accept the answer. Thank you.

Answer 3

JungJun Lim 0

After suffering from this, (fortunately it's just several days.) today I manage to validate my phone number.

It's not about your phone number, it's just about network connection.

If you could not make it with your WiFi or Internet, pls try it with LTE/5G via mobile. - or you might be in revert situation.

Still it's painful but you might not waste more time of your valuable life.

-JJ-

Answer 4

Samuel Foisy 0

It's hard to say wether or not this is the reason that my issue resolved but I realized that I had not enabled multi-factor authentication in my org settings for my email account (M365 Business Basic). It worked on first try after changing that setting after days of trying.

Could be a coincidence but worth a try if you haven't already done so and use a Microsoft 365 env for your business.

Siddhant Shirode 0 Reputation points

2024-01-29T08:28:41.95+00:00

Can you please share the steps you did for reference?

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Your phone number did not pass security checks E5 Sandbox

4 answers

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