Sign-in & Login Problems

How to Stop Microsoft 365 Word from Repeatedly Asking for Sign-In

Maira Mehtab Sep 22, 2026 869 views

Question details

User is experiencing continuous sign-in prompts in Microsoft Word, which incorrectly rejects their personal email as a work or school account.

Product: Microsoft Word
Device & OS: Windows 10
Scenario: Launching or using Microsoft Word after a system or software update.
Observed behavior: Word repeatedly asks the user to sign in and rejects their personal Microsoft account email, acting as if it expects a work or school account.

Before you start

Ensure you know your correct Microsoft account credentials and verify that both your Windows OS and Office suite are fully updated before troubleshooting.

Solution 1Recommended

Clear Stale Credentials in Windows Credential Manager

Removing outdated or corrupted login tokens from Windows can often resolve recurring Office sign-in loops without affecting your files.

Windows stores your account login tokens to keep you signed into Office apps. If an update corrupts these tokens, Word may fail to recognize your personal account. Clearing them forces Office to generate a fresh, working token.

Open Credential Manager

Click the Windows Start menu, type 'Credential Manager', and press Enter to launch the control panel applet.

Locate Windows Credentials

Select the 'Windows Credentials' tab to view your saved authentication tokens.

Remove Office Credentials

Scroll down to 'Generic Credentials'. Look for any entries containing 'MicrosoftOffice16' or 'MicrosoftAccount'. Click on them to expand, then click 'Remove'.

Restart and Sign In

Restart your computer, open Microsoft Word, and enter your personal Microsoft account details when prompted. The loop should now be resolved.

Solution 2

Test with a New Windows Administrator Profile

If the issue persists, your current Windows user profile might be corrupted. Testing a new profile helps isolate the issue.

Solution 3

Keep Another Office App Open (Temporary Workaround)

A quick, temporary fix discovered by users is to keep another Office application running in the background.

Free Microsoft Office alternative

Avoid Sign-In Loops with WPS Office

Tired of dealing with frustrating sign-in loops and activation bugs after updates? WPS Office is a free, lightweight, and highly compatible alternative to Microsoft Office. It allows you to edit files locally without mandatory sign-ins or complex account management.

1. Download the Installer: Visit the official WPS Office website and click the free download button.
2. Install WPS Office: Run the downloaded installer and follow the simple on-screen instructions to set up the software.
3. Open Your Documents: Double-click your existing .docx files to seamlessly open and edit them in WPS Writer without any sign-in prompts.

100% compatible with Microsoft Word (.docx), Excel, and PowerPoint formats.Edit files locally without mandatory sign-ins or cloud sync loops.Lightweight application that installs quickly and uses fewer system resources.Free to download and use with a highly familiar user interface.

microsoft office alternative - wps office

Frequently Asked Questions

Why does Word reject my personal email as a work or school account?

This happens when the cached Office authentication token gets confused, typically after a Windows or Office update. The software incorrectly attempts to validate against enterprise servers instead of consumer servers. Clearing your credentials forces it to reset.

Will uninstalling and reinstalling Microsoft 365 fix the sign-in loop?

Not always. If the issue stems from a corrupted Windows user profile or stale credentials cached in the Windows Credential Manager, a simple reinstall will carry over the bad data. You must clear the credentials or fix the user profile first.

Can a Windows update cause Office sign-in problems?

Yes, Windows or Office updates can occasionally corrupt cached login tokens or disrupt the background connection between Office apps and your Microsoft account, resulting in repeated login prompts.

Login & Account Issues