Can't log in to miscrosoft apps

Question

HI,

I have recently tried to sign in to all my Microsoft apps as I don't use the online web versions and although I am logged in online through a university email I can't log on to the apps due to an "updated" Microsoft log in, I was wondering how to get around this and will provide a copy of the error code below?

RECENT STUDENT SYSTEM CHANGE UPDATE

STUDENTS: If you see this message, you are still attempting to log on to the old Microsoft system.

Please stop and read the message below to access the new Microsoft system.

To access the new Microsoft system, please follow the steps below:

1. Clear your web browser's cache (https://www.usc.edu.au/current-students/having-trouble-logging-into-your-unisc-account)
2. Close and then relaunch your web browser
3. Go to Outlook (https://outlook.office365.com/owa/usc.edu.au/)
4. Sign on to the new system (you should not see this message again)

If you continue to see this message, contact the IT Help Desk.

I have done everything that has been described hence why I can log in online but I can't get past it in the actual apps like word, powerpoint, excel, etc. please respond asap as I have assessments I need to be able to access

thank you so much in advance

Answer 1

Hey there, Isabelle Clare

Please can you navigate to the OneDrive site here: https://onedrive.com

Once the page has loaded, please click sign in on the top right corner.

This will ask you to sign into your account. Please enter your school account email address in the sign in box

The sign box takes personal and work/school email addresses. Depending on which one it identifies, it will will redirect you to the right login page.

As you can see, it has directed me to my universities login portal. This allows me to sign into my university account, and access my OneDrive account. This should happen with you.

Microsoft have made some new changes to the workflow, which is probably what your university are talking about. Please be aware you may get a notification asking you if you trust your domain when signing up. This is a new feature implemented to allow people to see what account they are signing into and if they trust the account they are signing into on SharePoint.

Hope this helps,
Nathan

Answer 2

The apps are likely still using an old or broken sign-in state on the device, even though the new system works in the browser. Use these steps focused on the desktop apps themselves:

1. Make sure you’re signing in with the same university account

• In Word/Excel/PowerPoint, go to File > Account.
• If an account is already shown, sign out of all accounts there.
• Close all Office apps.

2. Clear the local Office sign-in cache

• Close all Office apps.
• On Windows, go to:
  • C:\Users\<YourUserName>\AppData\Local\Microsoft
  • Delete the folders identitycache and oneauth.
• Reopen Word (or another Office app) and sign in again with the university email.

3. Repair the Windows Account Manager (WAM) plug-ins (if on Windows 10/11) If the apps still won’t sign in or loop:

• Open PowerShell as the affected user (Run in user mode, not as another account).
• Run:

    Get-AppxPackage Microsoft.AAD.BrokerPlugin
    Get-AppxPackage Microsoft.Windows.CloudExperienceHost
  

• If either command returns nothing, or sign-in windows don’t open correctly, re-register the plug-ins:

    Add-AppxPackage -Register "$env:windir\SystemApps\Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy\Appxmanifest.xml" -DisableDevelopmentMode -ForceApplicationShutdown
    Add-AppxPackage -Register "$env:windir\SystemApps\Microsoft.Windows.CloudExperienceHost_cw5n1h2txyewy\Appxmanifest.xml" -DisableDevelopmentMode -ForceApplicationShutdown
  

• Restart the device, then try signing in to Word/Excel/PowerPoint again.

4. Avoid running Office under a different user context

• Don’t start Office apps with Run as administrator or Run as different user; always open them under the same Windows user that is signed in to the device. Impersonation can break the sign-in flow.

5. If the sign-in window shows “Something went wrong [1001]” or similar

• Reboot the device once.
• If the error persists after the steps above, the issue may be related to security software interfering with WAM. In that case, the university IT Help Desk should:
  • Temporarily uninstall or adjust security/WFP drivers on the device.
  • Re-run the WAM repair commands above.
  • If it still fails, collect MSOAID logs and open a support ticket as per the admin guidance in the references.

6. If nothing works and browser sign-in is fine

• Since the university has changed systems and you see the “old Microsoft system” message, the tenant configuration may require changes on the back end (e.g., device registration, conditional access, or profile issues).
• Contact the university IT Help Desk, provide the exact error text from the Office app sign-in window and confirm that:
  • Web sign-in at outlook.office365.com works with your student account.
  • Desktop apps still fail after clearing identitycache/oneauth and re-registering WAM.
• Ask them to check your account in Microsoft Entra ID and, if needed, open a Microsoft 365 support ticket.

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References:

• Error “Something Went Wrong [1001]” signing in to Microsoft 365 Desktop Applications
• Can't sign in to Microsoft 365 desktop applications
• Error code 80070520, -2147023584, or 2147943712 when signing in to Microsoft 365 apps
• How to troubleshoot non-browser apps that can't sign in to Microsoft 365, Azure, or Intune
• Sign in to Microsoft 365
• Having problems getting text codes to confirm my account - Microsoft Q&A
• How to fix the issue with MS Office asking you to log in every time you open an Office app - Microsoft Q&A
• Login loop after changing alias from hotmail to outlook - Microsoft Q&A
• Microsoft authenticator sending me into a spiral - Microsoft Q&A
• Correlation Id: [Moderator note: personal info removed] Timestamp: 2025-11-06T00:32:06.000Z DPTI: [Moderator note: personal info removed] 7 Message: An unexpected error occurred. Tag: 4oggx Code: 1864098253 - Microsoft Q&A
• Troubleshoot problems with the My Apps portal
• "Sorry, but we're having trouble signing you in" when a user signs in to Microsoft 365, Azure, or Intune