Receive an error when attempting to sign up for an Office 365 E5 Trial

Question

Office 365 E5 - Trial

One month free with payment details

Something happened

An error occurred. Please reach out to support for additional assistance.

Error Code: 715-123280

EventId: 664a2f6f-7085-4c2f-a3ae-1ba6666a00bb.

Technical details

SID: 3ef53446-9b6d-48b3-9a77-9eabbce2a616

cV: kA1KUnai6NhRAxkSdKtnzZ.0.13

TID: 8c6415c3-f58d-4850-9394-de5fcda2d473

UPN: ******@xxxxxx.onmicrosoft.com

Answer 1

Hello,

That code is typically triggered by Microsoft's automated security and fraud prevention system when it detects something it considers risky during the trial creation and billing phase.

Before we can figure out a workaround I need a few details to pinpoint what tripped the system.

First I need to know if your current internet connection is going through a VPN or a proxy, or if your physical location right now is different from the country associated with your credit card or billing address. Location mismatches are usually the main reason this fails.

Second I would like to know if you have used this exact same phone number, device, or payment method to register for any other Microsoft 365 or Azure trials in the past. Reusing verification details is another very common trigger for this specific block.

Lastly let me know what web browser you are using and if you have tried creating the trial over a completely different network, such as cellular data on a mobile device, to rule out an IP ban.

Let me know what your setup looks like right now so we can get this sorted out.

Answer 2

Error 715-123280 during Office 365 E5 (Microsoft 365 E5) trial sign-up indicates a sign-up or account validation problem that must be handled by Microsoft support or billing systems.

From the available guidance, the recommended paths are:

1. Verify account and billing details
   • Make sure the profile information (name, address, phone, email) and payment method details are complete and valid in the Microsoft account or organization profile.
   • When signing up, ensure the billing address for the payment method matches the bank’s records exactly.
2. Check eligibility and account type
   • Free trials are limited to users who are new to the specific service. If there was a previous subscription of the same type, a free trial might not be available and a pay-as-you-go or paid subscription may be required instead.
   • If the account is in an unmanaged Microsoft Entra directory or is a Microsoft 365 Developer Program account, it may not be allowed to purchase or activate certain paid services. In that case, use a different account or take over the unmanaged directory as described in the Azure sign-up troubleshooting guidance.
3. Browser and session checks
   • Try a different browser or an InPrivate/Incognito session to rule out cached cookies or session issues.
   • Ensure cookies are enabled and not blocked by privacy settings.
4. If the error persists
   • The error message explicitly instructs to contact support. Use the Microsoft support phone channel for billing/subscription issues so they can look up the EventId/TID and error code 715-123280 in back-end systems and complete or correct the trial sign-up.

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References:

• Troubleshoot issues when you sign up for a new account in the Azure portal
• You can't complete a purchase in the Office 365 portal
• Try or buy a Microsoft 365 for business subscription
• Customer Insights - Journeys trial FAQ