Sign-in & Login Problems

Fix Excel Requesting Authentication After Windows Sign-In

Elise Williams Oct 21, 2026 868 views

Question details

The user is experiencing repeated authentication prompts from Microsoft Excel even after successfully signing into their Windows account.

How to Fix Excel Requesting Authentication After Windows Sign-In

Product: Microsoft Excel
Device & OS: Windows
Scenario: Launching or using Excel after signing into a Windows session.
Observed behavior: Excel requests account verification again because Windows and Office maintain separate authentication sessions, causing unexpected login interruptions.

Before you start

Ensure you have your Microsoft 365 credentials ready and verify that your device has an active internet connection to communicate with the Microsoft authentication servers.

Solution 1Recommended

Verify Signed-In Account and Update Excel

Checking your account details within Excel and installing the latest updates can resolve underlying authentication bugs.

Windows and Office use separate authentication systems. Because of this, a simple update or account sync often resolves the continuous prompt loop.

Open Excel Account Settings

Open Microsoft Excel, click on the 'File' menu at the top left corner, and select 'Account' from the left sidebar.

Verify Account Details

Check the 'User Information' section to ensure the correct Microsoft 365 account is currently signed in.

Update Office

Click on 'Update Options' under the Product Information section and select 'Update Now' to install any pending patches.

Verify Signed-In Account and Update Excel

Updates Complete: Keeping Office updated ensures you have the latest security patches and authentication bug fixes.

Solution 2

Run Office Quick Repair or Online Repair

Use the built-in Windows repair tool to fix damaged authentication components causing repetitive login prompts.

Solution 3

Update Multi-Factor Authentication Settings

Configure multiple verification methods to ensure smooth and reliable authentication when Excel requests it.

Free Microsoft Office alternative

Use WPS Office to Avoid Complex Authentication Issues

If you are tired of repeated sign-in prompts and complex authentication issues in Microsoft Office, switch to WPS Office. It provides a lightweight, hassle-free experience with an intuitive interface and easy local editing without mandatory cloud sign-ins.

1. Download the Installer: Visit the official WPS Office website and download the free installer for Windows.
2. Install the Software: Run the downloaded file and follow the on-screen instructions to quickly install the application.
3. Open Your Spreadsheets: Launch WPS Spreadsheet and open your existing Excel files directly with no complex authentication required.

Fully compatible with Microsoft Excel (.xlsx, .xls) formats, ensuring your spreadsheets open perfectly.Eliminates frustrating authentication loops for basic offline editing tasks.Free to use with a familiar user interface, ensuring a seamless migration from Microsoft Office.

microsoft office alternative - wps office

Frequently Asked Questions

Should Excel sign in automatically after I sign in to Windows?

Not always. While Windows provides Single Sign-On (SSO) in some environments, Windows and Office often use separate authentication systems. Account changes, licensing issues, or session timeouts can require a separate login for Excel.

Why is two-factor authentication (2FA) causing inconvenience in Excel?

2FA adds an extra layer of security but can feel inconvenient if you only have one verification method configured or if your session tokens expire frequently. Setting up an authenticator app can speed up this process.

What is the difference between Quick Repair and Online Repair for Office?

Quick Repair runs fast offline and fixes common corrupted files. Online Repair takes longer and requires an internet connection, as it essentially reinstalls Office components, which is better for resolving deep authentication issues.

Login & Account Issues