ppt 오류가 있다고 뜨며 파일이 꺼져버립니다.

Question

Request Id: 37567045-49a0-4450-bff1-2e5f58422a00

Correlation Id: 9dbbc2a1-3069-5000-c586-03a663cf8c46

Timestamp: 2025-09-05T11:05:16Z

Message: AADSTS50020: User account '******@g.skku.edu' from identity provider 'live.com' does not exist in tenant 'SKKU' and cannot access the application '00000003-0000-0ff1-ce00-000000000000'(Office 365 SharePoint Online) in that tenant. The account needs to be added as an external user in the tenant first. Sign out and sign in again with a different Azure Active Directory user account.

Answer 1

Hello Moon Seon-jeong ,

Thank you for posting your question in the Microsoft Q&A Forum.

Based on the error message you’re seeing (AADSTS50020), it looks like you’re trying to access a PowerPoint file (via SharePoint Online) using an account that doesn’t exist in the SKKU tenant.

 To help me better understand the situation, could you please confirm the following:

1. Are you experiencing this issue when opening the file in the PowerPoint desktop app or in the web browser (SharePoint/OneDrive)?
2. Are you signed in with a personal Microsoft account (live.com/Outlook/Hotmail) or with your organization account (g.skku.edu)?
3. Can you try signing in at https://office.com using your SKKU-provided organizational account and let me know if that works?
4. Do you have an admin role in your organization’s Microsoft 365 tenant**?**

If you're an IT admin or Global Administrator:

• Go to the Azure Portal: https://portal.azure.com/
• Navigate to Microsoft Entra ID > Users
  • Check if the user account (******@g.skku.edu) exists in the tenant.
  • If not, invite the user as a guest (Microsoft Entra ID > Users > New guest user).
• Navigate to Microsoft Entra ID > External Identities > Cross-tenant access settings
  • Review B2B collaboration settings to ensure guest access is allowed.
• Check Conditional Access Policies that might block guest sign-in from certain accounts.

If you're an end-user:

• Contact your IT helpdesk or Global Administrator and request that your account (******@g.skku.edu) to be added as a guest user in the SKKU tenant.
• Clear Browser Cache
  • Sign out of all Microsoft accounts.
    • Open a private browsing window (Ctrl + Shift + N).
      • Try signing in again using your work/school account (g.skku.edu).
• Try a Different Browser or Use InPrivate Mode
  • Use a different browser (e.g., Edge, Chrome, Firefox).
  • Alternatively, open an InPrivate or Incognito window to avoid cached sessions interfering with sign-in.

For your reference, please see the following documents

https://learn.microsoft.com/en-us/entra/external-id/b2b-quickstart-add-guest-users-portal

https://learn.microsoft.com/en-us/troubleshoot/entra/entra-id/app-integration/error-code-aadsts5002…

I hope this information is helpful. Please try the steps provide above and let me know if they resolve the issue. If you continue to experience the error, please let me know.