Activation Problems

How to Fix Microsoft 365 Apps Not Authorized Error

Huda Qurayshi Sep 25, 2026 870 views

Question details

The user is experiencing an authorization error when trying to use Microsoft 365 applications, preventing them from accessing or editing their documents.

How to Fix Microsoft 365 Apps "You Are Not Authorized" Error

Product: Microsoft 365
Device & OS: Windows
Scenario: Opening or actively working in Microsoft Office applications such as Word, Excel, or PowerPoint with a subscription-based account.
Observed behavior: The Office applications display a "You are not authorized" error message, often locking the user out of editing features due to inactive subscriptions, incorrect accounts, or damaged licensing data.

Before you start

Ensure you know the exact email address and password associated with your Microsoft 365 subscription, and close all open Office applications before attempting to reset your licensing data.

Solution 1Recommended

Verify Subscription Status and Update License

Check if your Microsoft 365 subscription is active online and force your desktop apps to refresh their license status.

Check subscription online

Open your web browser and go to office.com/myaccount. Log in with your Microsoft account and navigate to 'Services and subscriptions' to ensure your subscription is active.

Access Account settings in Word

Open Microsoft Word on your computer. Click on 'File' in the top-left corner, then select 'Account' from the menu on the left side.

Update the license

Under the Product Information section, locate and click the 'Update License' button. Follow any on-screen prompts to authenticate your account.

Restart the application

Close Microsoft Word completely and re-open it to verify that the authorization error has been resolved.

Solution 2

Clear Office Identity Cache and Registry Keys

Fix corrupted licensing data by removing cached identity folders and resetting the Office Identity in the Windows registry.

Solution 3

Uninstall Conflicting Pre-installed Office Trials

Remove any pre-installed trial versions of Microsoft 365 Family that might be conflicting with your current subscription.

Free Microsoft Office alternative

Try WPS Office to Avoid Subscription and Authorization Errors

If Microsoft 365 authorization issues are continuously blocking your work, WPS Office offers a free, lightweight, and highly compatible alternative. You can smoothly edit Word, Excel, and PowerPoint files without worrying about complex subscription renewals or corrupted license caches.

1. Download the installer: Visit the official WPS Office website and click the 'Free Download' button to get the setup file.
2. Install WPS Office: Run the downloaded installer and follow the simple on-screen instructions to set up the software on your computer.
3. Open your documents: Launch WPS Office and directly open your existing Word, Excel, and PowerPoint files to continue working seamlessly.

Completely free to use with no complex subscription requirements or authorization errors.Highly compatible with Microsoft Office formats including .docx, .xlsx, and .pptx.Familiar user interface ensuring a seamless migration with zero learning curve.Lightweight application that uses fewer system resources than Microsoft 365.

microsoft office alternative - wps office

Frequently Asked Questions

Why does Microsoft 365 say I am not authorized?

This error typically occurs if your Microsoft 365 subscription has expired, you are signed in with a different account that lacks a license, or the local Office licensing cache on your device has become corrupted.

How do I force Microsoft 365 to recognize my active subscription?

You can force a license refresh by opening any Office application, navigating to File > Account, and clicking the 'Update License' button under Product Information. Restarting the app afterward usually resolves the sync issue.

Will deleting the IdentityCache folder delete my Office documents?

No, deleting the IdentityCache and OneAuth folders only resets your application login and authentication data. Your personal Word, Excel, and PowerPoint documents stored locally or on OneDrive remain completely safe and untouched.

Does uninstalling a trial version affect my paid Microsoft 365 installation?

Uninstalling a separate trial version (like Microsoft 365 Family Trial) will not delete your paid version's files. It actually helps by removing conflicts, allowing your paid version to properly authenticate and function.

Installation & Activation