How to Fix Excel Keeps Requesting Administrator Credentials and Sign-In
Question details
Excel repeatedly prompts the user to enter administrator credentials or sign into Microsoft 365, even though other applications like Word and PowerPoint are functioning normally.
- Product
- Microsoft Excel
- Device & OS
- Windows
- Scenario
- Launching or working within Microsoft Excel.
- Observed behavior
- The application constantly interrupts the user's workflow by opening an authentication prompt asking for admin credentials or account sign-in.
Make sure you have your correct Microsoft 365 account email and password ready, and save any open workbooks before closing your Office applications.
Clear Stale Credentials and Sign In Again
Removing outdated login tokens from the Windows Credential Manager often resolves persistent sign-in loops caused by conflicting account data.
Sometimes, Windows caches old passwords or multiple account tokens that conflict with your current Microsoft 365 license, causing Excel to fail at silent authentication.
Open Excel, click on 'File' > 'Account', and click 'Sign Out'. Close all Office applications completely.
Click the Windows Start menu, type 'Credential Manager', and press Enter to open the utility.
Select 'Windows Credentials'. Scroll down to the 'Generic Credentials' section, find any entries starting with 'MicrosoftOffice', click on them, and select 'Remove'.
Restart your computer. Open Excel again and sign in using your licensed work or personal Microsoft 365 account.
Repair the Microsoft 365 Installation
If clearing credentials does not work, the Office installation or its activation components might be damaged and require a repair.
Switch to WPS Office for a Hassle-Free Experience
Tired of persistent sign-in loops, complex licensing, and administrator credential prompts? WPS Office is a lightweight, completely free alternative that allows you to open, edit, and create spreadsheets without frustrating activation errors.
- 1. Download and Install: Get the free WPS Office installer from the official website and install it in seconds.
- 2. Open Your Spreadsheets: Launch WPS Spreadsheets and open your existing .xlsx files directly without any formatting loss.
- 3. Work Without Interruptions: Enjoy editing your documents offline or online without being interrupted by administrator prompts.
Frequently Asked Questions
Why does Excel ask for credentials while Word and PowerPoint work perfectly?
Excel may be trying to access a specific external data connection, a shared workbook on a network drive, or an Excel-specific add-in that requires separate authentication, triggering the prompt independently of Word or PowerPoint.
Will I lose my custom Excel settings if I repair Microsoft 365?
Running a Quick Repair will not affect your custom settings or files. An Online Repair is more thorough and acts like a reinstallation, but it generally preserves your custom templates and personal settings.
What if clearing credentials and repairing Office doesn't work?
If both methods fail, your device might be subject to specific IT policies or conditional access rules. You should contact your organization's IT administrator to check for device policy restrictions or backend licensing issues.
