Sign-in & Login Problems

Fix Office Error: Another Account Is Already Signed In on iOS

WPS Content Manager Oct 9, 2026 870 views

Question details

The user is unable to sign in to Microsoft Office apps on their Apple mobile device due to an error indicating that another organizational account is already active.

How to Fix Office Error: Another Account Is Already Signed In on This Device

Product: Microsoft Office
Device & OS: iPhone/iPad
Scenario: Attempting to log into an organizational account in Office applications like Word or Excel on a mobile device.
Observed behavior: The application blocks the login attempt with an error message stating that another organizational account is already signed in on the device.

Before you start

Verify your active accounts and ensure you have the correct email address and password ready for the organizational account you wish to use.

Solution 1Recommended

Reset Cached Credentials in iOS Settings

Clear the saved login data in your device settings to remove the conflicting organizational account.

Office apps on iOS often cache sign-in credentials to keep you logged in. When switching organizational accounts, this cache can cause a conflict, preventing the new account from authenticating properly.

Quit All Office Applications

Swipe up from the bottom of your iPhone or iPad screen to open the app switcher, then swipe up on all open Office apps (Word, Excel, PowerPoint) to fully close them.

Open Device Settings

Navigate to the main Settings app on your iOS device and scroll down until you find the specific Office app you are trying to use.

Clear Sign-In Credentials

Tap on the app name, select the 'Reset' option, and toggle on 'Delete Sign-In Credentials'.

Restart the App and Sign In

Launch the Office application again. The cached data will be cleared, allowing you to sign in with your correct organizational account.

Reset Cached Credentials in iOS Settings

Safe Data Reset: Resetting sign-in credentials only removes account login tokens. It will not delete your locally saved documents or files.

Solution 2

Uninstall and Reinstall Office Applications

If resetting credentials fails, completely reinstalling the apps will wipe out any deeply cached account conflicts.

Free Microsoft Office alternative

Try WPS Office for a Hassle-Free Mobile Experience

Tired of dealing with complicated account conflicts and restrictive sign-in errors? WPS Office offers a lightweight, all-in-one mobile solution that lets you view, edit, and share documents effortlessly, without being locked down by organizational account restrictions.

1. Install the App: Download WPS Office for free from the App Store on your iPhone or iPad.
2. Open Your Files: Launch WPS Office and directly open your existing docx, xlsx, or pptx files without dealing with forced account sign-ins.
3. Edit and Save: Enjoy seamless editing and save your documents locally or connect to your preferred cloud storage service.

Fully compatible with Microsoft Word, Excel, and PowerPoint formats.Lightweight and fast, optimized for both iPhone and iPad.No restrictive organizational account login conflicts.Built-in PDF reader and editor for complete document management.

microsoft office alternative - wps office

Frequently Asked Questions

Why does this sign-in error happen on my iPhone or iPad?

This occurs because iOS caches your login tokens. If you previously signed in with a different organizational account (like a school or work email) and attempt to sign in with a new one without clearing the old tokens, the Office app recognizes a conflict and blocks the login.

Will clearing my credentials delete my local files?

No, toggling 'Delete Sign-In Credentials' in your iOS settings only clears your saved account information. Your locally stored documents on the device remain completely safe.

Can I use both a personal and organizational account in Office apps?

Yes, Microsoft Office apps generally allow you to add one personal account and one organizational account simultaneously. However, conflicts typically arise when you attempt to add two different accounts from the same organization or transition between organizational accounts.

Login & Account Issues