Microsoft 365 Error Codes

How to Fix Microsoft 365 Sign-In Error 2604 on iPad

WPS Content Manager Oct 8, 2026 868 views

Question details

Users are unable to sign in to Microsoft 365 apps on an iPad using a student account due to a 'No Network Connection' or Error 2604 prompt.

How to Fix Microsoft 365 Sign-In Error 2604 on iPad

Product: Microsoft 365
Device & OS: iPadOS
Scenario: Attempting to sign in to Microsoft 365 applications, such as OneNote or Word, on an iPad using a university or student account.
Observed behavior: The application fails to redirect to the university login page and instead displays a 'No Network Connection' message or error code 2604, despite having an active internet connection.

Before you start

Ensure your iPad has a stable internet connection and try accessing other websites via Safari to rule out a general Wi-Fi or cellular network outage.

Solution 1Recommended

Update iPad Settings and Clear Account Profiles

Correcting the device time settings and clearing out old school account profiles can often resolve authentication and certificate mismatch errors.

Authentication servers require exact time synchronization to establish a secure connection. If your iPad's time is out of sync, or if old school profiles are conflicting with the sign-in request, it can trigger Error 2604.

Set Date and Time to Automatic

Go to Settings > General > Date & Time on your iPad and toggle on 'Set Automatically' to prevent certificate sync issues.

Update iPadOS and Microsoft Apps

Navigate to Settings > General > Software Update to install any pending iPadOS updates. Open the App Store, tap your profile icon, and update all Microsoft 365 apps.

Remove Old Account Data

Go to Settings > General > VPN & Device Management and remove any existing school profiles. Then scroll down in Settings to find the specific Microsoft app (e.g., OneNote), tap it, and select 'Reset [App]' to clear cached login credentials.

Restart and Sign In

Restart your iPad, launch the Microsoft 365 app, and attempt to sign in with your student email again.

Update iPad Settings and Clear Account Profiles

Resetting the App: Resetting the app will clear unsynced local data. Ensure any offline notes or documents are backed up elsewhere if possible.

Solution 2

Contact University IT for Federation and License Verification

If the app fails to redirect to your university's login page, the issue likely stems from the institution's identity provider configuration.

Free Microsoft Office alternative

Use WPS Office as a Seamless Alternative on iPad

If Microsoft 365 continues to block your access with Error 2604, WPS Office is a highly compatible, free alternative for your iPad. It allows you to view, edit, and create documents without relying on complex university account configurations.

1. Download WPS Office: Open the App Store on your iPad, search for WPS Office, and download the application for free.
2. Open Your Documents: Launch WPS Office and tap the 'Files' tab to import or open your existing university documents locally from your device.
3. Edit and Save: Use the familiar interface to edit your documents and save them in standard Office formats to share with your professors or peers.

Completely free to use for basic document viewing and editing on iPadOS.Highly compatible with Microsoft Office formats, including Word (.docx), Excel (.xlsx), and PowerPoint (.pptx).Lightweight app design that works completely offline without requiring constant server authentication.No complicated university IT federation required to start taking notes or writing essays.

microsoft office alternative - wps office

Frequently Asked Questions

Why do I get a network connection error in Microsoft 365 when my iPad is connected to Wi-Fi?

Error 2604 or false network errors often occur when the app cannot securely connect to the authentication server. This is usually due to incorrect iPad date and time settings, an outdated application, or misconfigured university login portal federation.

Will completely resetting my iPad fix Microsoft 365 Error 2604?

As reported by many students, a full factory reset of the iPad often does not resolve Error 2604 if the root cause is a configuration issue with the university's identity provider. Try clearing the app credentials and contacting your IT department first.

How can I access my university documents if the Microsoft 365 iPad app won't log in?

You can try logging into the web version of Microsoft 365 via the Safari browser on your iPad. Alternatively, you can download a compatible free app like WPS Office to open and edit downloaded Office files locally on your device without needing to sign in to the university network.

Microsoft Office Error Codes