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Microsoft 365 E5 Instant Sandbox Login failure

I created a new Microsoft 365 E5 Instant Sandbox and receive AADSTS53003 during the very first sign-in. No Conditional Access policies were configured by me because I have never been able to access the tenant. The issue occurs from multiple devices,…

Microsoft 365 and Office | Development | Microsoft 365 Developer Program
asked 2026-11-05T08:22:41.4+00:00
Pereira, Raphael 0 Reputation points
edited the question 2026-11-05T09:05:35.78+00:00
Doris V 2,760 Reputation points Microsoft External Staff Moderator
1 answer

Outrageous and Unacceptable: 10 GB E5 Developer Quota Destruction Bricks Legitimate Dev Work

To the Microsoft 365 Developer Program Team, I am writing this with absolute disbelief and profound frustration. Slashing the Microsoft 365 E5 Developer OneDrive storage from 1–5 TB down to a ridiculous 10 GB overnight—with zero advance warning, zero…

Microsoft 365 and Office | Development | Microsoft 365 Developer Program
asked 2026-11-04T09:34:37.7366667+00:00
上官嘉洛 0 Reputation points
answered 2026-11-04T10:05:24.74+00:00
Fahim-Nz 90 Reputation points Independent Advisor
2 answers One of the answers was accepted by the question author.

Unable to sign into my Microsoft 365 Developer Program tenant

Good day I am the sole Global Administrator of a Microsoft 365 Developer Program tenant (xxx.onmicrosoft.com). My previous phone containing the Microsoft Authenticator registration was stolen. I know my username and password and have successfully reset…

Microsoft 365 and Office | Development | Microsoft 365 Developer Program
asked 2026-10-01T09:21:30.57+00:00
Debbie Haines 20 Reputation points
edited an answer 2026-11-04T08:35:29.5833333+00:00
Nam-D 4,670 Reputation points Microsoft External Staff Moderator
1 answer

I need help recovering my Microsoft 365 Developer E5 tenant.

Hello, I need help recovering my Microsoft 365 Developer E5 tenant. I am the only Global Administrator. I know my password, but I cannot access Microsoft Authenticator. I have no alternative verification methods. I can access my Microsoft 365 Developer…

Microsoft 365 and Office | Development | Microsoft 365 Developer Program
asked 2026-10-31T03:57:19.1933333+00:00
Somnath Bhattarai 0 Reputation points
edited an answer 2026-10-31T04:08:20.32+00:00
Dora-T 1,990 Reputation points Independent Advisor
1 answer

Unable to Access Developer Program Account – Authenticator Issue

I am unable to access my Microsoft Developer Program account, [Moderator note: Personally Identifiable Information removed] @17nq8.onmicrosoft.com My previous mobile phone is no longer available, and the account is asking me to approve the sign-in…

Microsoft 365 and Office | Development | Microsoft 365 Developer Program
asked 2026-10-30T12:48:17.9566667+00:00
Tejasvita Dhuri 0 Reputation points
edited the question 2026-10-30T13:24:56.8933333+00:00
Daniel-Vo 7,900 Reputation points Microsoft External Staff Moderator
3 answers

Urgent Request: Access to OneDrive Data and Tenant Status Clarification

Dear Microsoft Support Team, I am contacting you regarding the unexpected loss of access to my Microsoft 365 Developer account and associated OneDrive data. I am a developer and have been actively using Microsoft services since 2023 to store and manage…

Microsoft 365 and Office | Development | Microsoft 365 Developer Program
asked 2026-03-30T21:04:50.9933333+00:00
Somia Bekkouche 0 Reputation points
commented 2026-10-30T11:14:34.34+00:00
Thangu Thangu 0 Reputation points
2 answers

URGENT: Microsoft 365 E5 Developer OneDrive Reduced from 5 TB to 10 GB – Unable to Access Over 2 TB of Existing Data

Hello Microsoft Community and Support Team, I have been using a Microsoft 365 E5 Developer subscription for several years, and my subscription was recently renewed successfully. However, I discovered that my OneDrive for Business storage quota was…

Microsoft 365 and Office | Development | Microsoft 365 Developer Program
asked 2026-10-29T16:16:24.4+00:00
Ân Nguyễn 0 Reputation points
answered 2026-10-29T16:46:26.05+00:00
Ryan-N 16,940 Reputation points Microsoft External Staff Moderator
2 answers

Microsoft 365 Developer Program

Subject: Request for Review of Microsoft 365 Developer Sandbox Eligibility and Accessibility Considerations Dear Microsoft 365 Developer Program Support Team, My name is Dror Levi, and I am an IT System Administrator currently building a small IT and…

Microsoft 365 and Office | Development | Microsoft 365 Developer Program
asked 2026-10-29T09:10:44.13+00:00
Dror Levi 0 Reputation points
edited an answer 2026-10-29T11:30:49.83+00:00
Helen Luu 3,645 Reputation points Independent Advisor
2 answers One of the answers was accepted by the question author.

Store developer account creation fails – INTERNAL_ERROR (PartnerIntegrationService 400)

Hi, I'm registering a free individual Microsoft Store developer account from Argentina. Identity verification completed and my address shows as verified, but account creation always fails at the final step. POST…

Microsoft 365 and Office | Development | Microsoft 365 Developer Program
asked 2026-10-28T11:41:16.19+00:00
matias alia 20 Reputation points
accepted 2026-10-28T23:09:03.5266667+00:00
matias alia 20 Reputation points
2 answers

Unable to access Microsoft 365 Developer Sandbox - Lost MFA Device - Sole Global Admin

I am the sole Global Administrator of my Microsoft 365 Developer Program tenant. I no longer have access to the Microsoft Authenticator registration used for MFA. No alternate authentication methods were configured and there are no additional Global…

Microsoft 365 and Office | Development | Microsoft 365 Developer Program
asked 2026-10-24T09:10:16.74+00:00
Kapil Pal 0 Reputation points
answered 2026-10-24T09:24:26.94+00:00
Darren Bruce 2,360 Reputation points Independent Advisor
1 answer

Unable to Create a New Microsoft 365 Developer E5 Subscription After Deletion of Two Previous Subscriptions

Hello, I have been participating in the Microsoft 365 Developer Program since 2022. I previously created two Microsoft 365 E5 Developer subscriptions, but both have now expired. After the subscriptions expired, I followed the instructions to delete them…

Microsoft 365 and Office | Development | Microsoft 365 Developer Program
asked 2026-10-23T03:42:25.66+00:00
Leo Li 0 Reputation points
edited an answer 2026-10-23T07:52:33.5266667+00:00
Michelle Nguyen 2,620 Reputation points Independent Advisor
2 answers

Microsoft 365 Developer Program – No billing accounts found despite active MCA, Invoice Section and Azure Plan

We are trying to provision a Microsoft 365 E5 Developer Program sandbox using a corporate Microsoft Entra ID account. During Set up E5 subscription → Instant Sandbox, the Billing account dropdown shows: "No billing accounts found" We have…

Microsoft 365 and Office | Development | Microsoft 365 Developer Program
asked 2026-10-22T13:41:39.1+00:00
Vidar Skjelanger Reknes 0 Reputation points
answered 2026-10-22T15:06:05.3+00:00
BabybooHN 3,810 Reputation points Independent Advisor
2 answers

altpgen.exe missing from AL Language extension 18.x. Is the NuGet package the supported way to get it?

Hi all, I’m trying to add a custom Choice column from the Dataverse Account table to a Business Central integration (CRM Account table extension and Integration Field Mapping). I’m following the AL Table Proxy Generator workflow. What I see AL…

Microsoft 365 and Office | Development | Microsoft 365 Developer Program
asked 2026-10-21T11:56:34.2833333+00:00
Mahek Mehta 0 Reputation points
commented 2026-10-22T12:53:35.8066667+00:00
Kristen Tran 2,785 Reputation points Independent Advisor
1 answer

Microsoft 365 Developer E5 Sandbox – Sole Global Administrator Locked Out Due to Authenticator MFA

Authenticator無法進行驗證,[版主註:已移除可識別個人身分的資訊]@4c0fc2.onmicrosoft.com,這兩天無法登入,急需使用。 Hello Microsoft Support Team, I created a free Microsoft 365 Developer Program sandbox. My administrator account is: [[Moderator note: Personally Identifiable Information…

Microsoft 365 and Office | Development | Microsoft 365 Developer Program
asked 2026-10-21T05:43:10+00:00
winnie winnie 0 Reputation points
edited the question 2026-10-21T06:08:52.75+00:00
Doris V 2,760 Reputation points Microsoft External Staff Moderator
1 answer

Rsseteo metodo MFA cuanta Developer

Buenas tardes: Soy usuario del programa Microsoft 365 Developer Program. La cuenta administardora es @2z1fv8.onmicrosoft.com, perdi mi movil y alli tenia al app autenticator de la cuenta. Al tratar de ingresar a la cueeta, luego de validad la contraseña…

Microsoft 365 and Office | Development | Microsoft 365 Developer Program
asked 2026-10-20T20:08:50.5+00:00
Andres Garcia 0 Reputation points
answered 2026-10-20T20:29:59.4766667+00:00
Ryan-N 16,940 Reputation points Microsoft External Staff Moderator
1 answer

Can't create a billing account while activating the Microsoft 365 E5 Sandbox through Developer subscription

Hi All, I have joined the M365 developer program using my corporate account. As a mandate for creating the Microsoft 365 E5 sandbox a billing account needs to be created. When I try to create the billing account, I get the attached message. I have…

Microsoft 365 and Office | Development | Microsoft 365 Developer Program
asked 2026-10-20T15:50:24.7733333+00:00
MT 0 Reputation points
answered 2026-10-20T17:14:14.1966667+00:00
Lin V 1,965 Reputation points Independent Advisor
2 answers

Unable to Access Power BI Service for Microsoft Learn Virtual Labs Without a Developer Sandbox

I am preparing for the PL-300 certification using Microsoft Learn and need access to Power BI Service to complete the virtual lab exercises in my own environment. When I sign in using my college account, I receive the message: “Your organization doesn't…

Microsoft 365 and Office | Development | Microsoft 365 Developer Program
asked 2026-10-19T10:46:21.0033333+00:00
Tanvi Pakhale 0 Reputation points
commented 2026-10-20T15:11:40.0266667+00:00
Demi Nguyen 2,950 Reputation points Independent Advisor
2 answers

My Developer account is not accessing Sharepoint site

Hi Support Team, My developer access has been activated, and I am able to access the Power Platform successfully. However, I am unable to access SharePoint Online and OneDrive. When I try to open SharePoint, I receive a “Too many redirects…

Microsoft 365 and Office | Development | Microsoft 365 Developer Program
asked 2026-10-14T15:04:29.1666667+00:00
Anuj Gupta 0 Reputation points
edited a comment 2026-10-15T16:44:49.65+00:00
Lin V 1,965 Reputation points Independent Advisor
8 answers

Microsoft 365 Developer Program - "No billing accounts found" when provisioning E5 Instant Sandbox

Hello, My team and I are trying to provision a Microsoft 365 E5 Developer sandbox through the Microsoft 365 Developer Program, but we are blocked during the Instant Sandbox setup. Environment Microsoft 365 Developer Program member Using a corporate…

Microsoft 365 and Office | Development | Microsoft 365 Developer Program
asked 2026-07-13T06:20:40.94+00:00
Auras Paltanea 45 Reputation points
commented 2026-10-14T14:06:42.26+00:00
Péter Markó 0 Reputation points
1 answer

Developer E5 Sandbox tenant admin locked out due to lost Microsoft Authenticator

Tenant: 7kn420.onmicrosoft.com Admin account: [Moderator note: Personally Identifiable Information removed] @7kn420.onmicrosoft.com Issue: The Microsoft Authenticator app entry for the admin account was removed from my mobile device. The account now…

Microsoft 365 and Office | Development | Microsoft 365 Developer Program
asked 2026-10-13T17:19:23.2933333+00:00
Sethupathi, S (Cognizant) 0 Reputation points
edited the question 2026-10-13T17:36:26.5433333+00:00
Jack-Bu 7,220 Reputation points Microsoft External Staff Moderator