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How to Fix SharePoint iOS Sign-In and Rejected MFA Codes
Question details
The user is unable to sign into the SharePoint mobile app because it repeatedly requests and rejects valid Multi-Factor Authentication (MFA) codes.
- Product
- Microsoft SharePoint
- Device & OS
- iOS
- Scenario
- Signing into the SharePoint mobile app on a new iOS device, such as upgrading to a newer iPhone model.
- Observed behavior
- The SharePoint app gets stuck in a loop, continually asking for an MFA code and rejecting valid entries, while other Microsoft apps sign in successfully on the same device.
Ensure you have the latest versions of iOS, the SharePoint app, and your authenticator app installed before attempting to troubleshoot complex sign-in loops.
Test Account Sign-In on Another iOS Device
Determine if the MFA rejection is a device-specific compatibility bug or an account-wide security issue.
In many cases, this MFA loop is triggered by an app compatibility bug specific to newer iPhone hardware or major iOS updates. Isolating the variable will help identify the root cause.
If you recently upgraded your phone, turn on your previous iPhone or iPad and connect it to Wi-Fi.
Open the SharePoint app on the older iOS device and attempt to sign in using the exact same credentials and MFA method.
If the sign-in succeeds on the old device but fails on the new one, this confirms a compatibility issue between the current SharePoint app and your specific new device model.
Report the Bug via Microsoft SharePoint Feedback
Escalate the isolated device bug to the Microsoft product team so they can investigate and release a compatibility patch.
Try WPS Office for Seamless Mobile Document Management
While waiting for Microsoft to patch SharePoint iOS MFA bugs, you can manage, edit, and share your documents seamlessly with WPS Office. It is a highly compatible, lightweight alternative that avoids complex authentication loops.
- 1. Download the app: Get WPS Office for free from the Apple App Store.
- 2. Sign in effortlessly: Create a free account or sign in quickly using Apple, Google, or email.
- 3. Connect your cloud: Link your preferred cloud storage services like OneDrive, Google Drive, or Dropbox to access all your documents immediately.
Frequently Asked Questions
Why is my SharePoint app rejecting the correct MFA code?
This is often caused by a device-specific compatibility bug between the SharePoint iOS app and newer iOS devices or updates, preventing the app from properly validating the authentication token sent by your authenticator.
Can I use other Microsoft apps if SharePoint is failing to sign in?
Yes, in many cases, users report that Microsoft Teams, Outlook, and OneDrive authenticate successfully even when the SharePoint app encounters an MFA loop on the very same device.
How do I find my SharePoint app version on iOS?
You can find the app version by opening the Settings app on your iPhone, scrolling down to your list of apps, tapping on SharePoint, and checking the version number listed on the screen.
