Sign-in & Login Problems

How to Fix SharePoint Sign-In Problems on iPhone

Maira Mehtab Sep 21, 2026 869 views

Question details

The user is unable to sign in to the SharePoint app on an iPhone, even though the same account works perfectly on a PC and the device is fully updated.

Product: Microsoft SharePoint
Device & OS: iOS
Scenario: Attempting to access SharePoint files and sites from a mobile device after the app suddenly stopped authenticating.
Observed behavior: The SharePoint iOS app fails to complete the sign-in process, blocking mobile access despite the account being active and functional elsewhere.

Before you start

Ensure you have your Microsoft 365 credentials handy and verify that your iPhone has a stable Wi-Fi or cellular data connection before proceeding with the troubleshooting steps.

Solution 1Recommended

Clear Account Settings in the SharePoint App

Resetting the cached account data resolves most sudden sign-in blocks and authentication errors on iOS devices.

Often, temporary files or outdated login tokens can cause the SharePoint app to freeze during sign-in. Clearing the account settings forces the app to request a fresh authentication token.

Open iPhone Settings

Navigate to your iPhone's home screen and open the main Settings app.

Locate SharePoint

Scroll down through your list of installed applications and tap on SharePoint.

Clear Settings

Find the toggle labeled 'Clear Account Settings' and turn it on.

Sign In Again

Relaunch the SharePoint app. The app will open as if it is freshly installed, prompting you to enter your email and password.

Safe Process: Clearing account settings will not delete your documents or files stored on SharePoint. It only removes local login data from your iPhone.

Solution 2

Reinstall the App and Switch Networks

If clearing settings does not work, a fresh install combined with a different network connection can bypass underlying app corruption or IP restrictions.

Free Microsoft Office alternative

Try WPS Office for Seamless Mobile Document Management

While troubleshooting Microsoft 365 services like SharePoint, consider using WPS Office as a free, lightweight, and easy-to-use alternative. It offers excellent compatibility with Microsoft Office formats and provides a smooth mobile experience for reading, editing, and managing your documents on the go.

1. Download the App: Search for WPS Office in the App Store and download it to your iPhone for free.
2. Connect Your Cloud: Open WPS Office and navigate to the 'Cloud' tab to link your preferred storage services.
3. Edit on the Go: Tap any document to instantly view, edit, and share it without formatting issues.

Fully compatible with Microsoft Word, Excel, and PowerPoint formats.Lightweight iOS app that prevents excessive battery drain and saves storage space.Built-in cloud storage integration to seamlessly access your documents anywhere.Intuitive, mobile-friendly interface for effortless document editing and sharing.

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Frequently Asked Questions

Why does SharePoint work on my PC but not on my iPhone?

This usually happens due to corrupted cache data in the iOS app, an outdated mobile app version, or specific network restrictions applied to your mobile device.

Will clearing account settings delete my SharePoint files?

No, clearing account settings only removes the cached sign-in data and temporary settings from your iPhone. All your actual files remain safely stored in the cloud.

What information should I gather if the login issue persists?

If you still cannot sign in, note down your current iOS version, the SharePoint app version, and take sanitized screenshots of any error codes to provide to your IT admin or Microsoft support.

Login & Account Issues