Sign-in & Login Problems

Fix Microsoft Office Sign-in Errors When Browser Login Works

Kushani Nimanthika Oct 10, 2026 869 views

Question details

The user is unable to sign in to Microsoft Office desktop applications despite successfully logging into their Microsoft account via a web browser.

Fix Microsoft Office Sign-in Errors When Browser Login Works

Product: Microsoft Office
Device & OS: Windows and macOS
Scenario: Attempting to activate or sign in to Office desktop applications with a valid Microsoft account.
Observed behavior: Office applications reject the account credentials, indicating an error or incorrect password, even though the same credentials work perfectly on the web.

Before you start

Ensure you have completely closed all running Microsoft Office applications before attempting to clear your cached credentials.

Solution 1Recommended

Clear Stale Office Credentials on Windows

Use this method if you are on a Windows PC to remove corrupted or outdated Microsoft Office login data that is blocking your access.

Windows stores your application login tokens in a built-in utility called Credential Manager. When this cached data becomes stale or corrupted, it causes sign-in loops or rejects correct passwords in Office desktop apps.

Open Credential Manager

Click the Windows Start button, type 'Credential Manager' in the search bar, and press Enter to open the utility.

Access Windows Credentials

Select the 'Windows Credentials' tab at the top to view your system and application stored login information.

Remove Office Entries

Scroll down to the 'Generic Credentials' section. Look for any entries containing 'MicrosoftOffice'. Click the drop-down arrow next to each one and select 'Remove'.

Restart and Sign In

Restart your computer, open an Office application like Word or Excel, and try signing in again with your account email and password.

Clear Stale Office Credentials on Windows

Safe Process: Removing these credentials will not delete your documents or Microsoft account. It only forces Office to prompt you for a fresh login.

Solution 2

Delete Office Credentials on Mac

If you are using a Mac, stale Office credentials stored in Keychain Access can prevent successful sign-ins and need to be cleared.

Solution 3

Sign Out of Conflicting Microsoft Accounts

Having multiple Microsoft accounts logged into the same device can cause authentication conflicts within Office applications.

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Frequently Asked Questions

Why does my Microsoft account work in the browser but not the Office desktop app?

Browsers and desktop apps handle login sessions differently. Office apps rely on system-level credential managers (like Windows Credential Manager or Mac Keychain). If the system cache becomes corrupted or out of sync, the app will reject your login even if the web version authenticates perfectly.

Will clearing my credentials delete any of my Word or Excel files?

No, clearing credentials only removes the saved login passwords and authentication tokens from your local device. Your actual documents, spreadsheets, and files stored in the cloud (like OneDrive) remain completely safe and untouched.

What should I do if clearing credentials doesn't fix the sign-in error?

If the issue persists, ensure your computer's date and time settings are synced automatically, as incorrect system clocks can cause authentication token failures. You may also need to try resetting your Microsoft account password or running the Microsoft Support and Recovery Assistant tool.

Login & Account Issues