How to Fix PowerPoint 3D Models InvalidAuthenticationInfo Error
Question details
Users are unable to insert stock 3D models into their presentations due to an authentication error.
- Product
- Microsoft PowerPoint
- Device & OS
- not provided
- Scenario
- Attempting to insert a stock 3D model from the online library into a slide.
- Observed behavior
- PowerPoint displays an InvalidAuthenticationInfo error, indicating that the Authorization header has an incorrect format.
Ensure your device has a stable and active internet connection, as inserting stock 3D models requires communicating with Microsoft's online servers.
Restart PowerPoint and Verify Your Account
Refreshing the application session and ensuring you are logged in with the correct account can resolve temporary token format glitches.
The InvalidAuthenticationInfo error is often caused by a temporary disruption in the communication between your Office application and Microsoft's server. Restarting your software and system will generate a fresh authorization request.
Save any ongoing work and completely close Microsoft PowerPoint.
Restart your computer to clear any lingering cache or network connectivity issues.
Open PowerPoint again. Click on 'Account' in the bottom-left corner of the launch screen to confirm you are logged in with a valid Work, School, or Personal Microsoft 365 account.
Open your presentation, navigate to the 'Insert' tab, select '3D Models', click 'Stock 3D Models', and attempt to insert a model.
Update Microsoft Office to the Latest Version
Updating PowerPoint ensures compatibility with online features and patches known authentication bugs.
Try WPS Office for Seamless Presentation Creation
If Microsoft PowerPoint continues to show authentication errors, consider switching to WPS Office. It is a free, lightweight alternative that offers robust presentation tools, high compatibility with PowerPoint files, and an intuitive interface.
- 1. Download WPS Office: Visit the official WPS website to download and install WPS Office Free.
- 2. Open Your Presentation: Launch WPS Presentation and click 'Open' to load your existing .pptx file.
- 3. Continue Editing: Edit your slides effortlessly with a familiar, user-friendly interface.
Frequently Asked Questions
Why does PowerPoint say InvalidAuthenticationInfo when inserting 3D models?
This error usually occurs when the security token or authorization header sent to Microsoft's servers to fetch the stock 3D model is corrupted, expired, or improperly formatted. It is frequently tied to temporary network glitches or account login issues.
Do I need a Microsoft 365 subscription to use stock 3D models?
Yes, inserting stock 3D models directly from Microsoft's online library typically requires an active Microsoft 365 subscription. Users on older standalone versions like Office 2016 may not have access to this feature.
Can I insert my own 3D models instead of stock models?
Yes. If the stock 3D models feature is failing due to server or account errors, you can insert models manually. Download a compatible 3D model (like .glb or .obj), go to the Insert tab, select '3D Models', and click 'This Device' to upload it.
