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How to Troubleshoot Intune Wallpaper Error 406

Nimra Malik Sep 28, 2026 869 views

Question details

The user needs to resolve an error 406 in Microsoft Intune that occurs when trying to deploy a wallpaper using a direct JPG or GitHub URL within a device configuration profile.

How to Troubleshoot Intune Wallpaper Error 406

Product: Microsoft Intune
Device & OS: not provided
Scenario: Deploying a desktop or lock screen wallpaper across managed devices using an Intune device configuration profile.
Observed behavior: The configuration profile deployment fails, returning an error 406 (Not Acceptable) related to the provided image URL.

Before you start

Ensure you have Microsoft Endpoint Manager administrative privileges and verify that the target devices are actively syncing with the Intune service.

Solution 1Recommended

Verify Image URL Formatting and Hosting Server

Intune requires a direct, publicly accessible HTTPS link to the raw image file that does not trigger authentication or block automated requests.

Error 406 (Not Acceptable) usually occurs when the hosting server rejects the automated request from Intune, often due to missing headers, rate limiting, or hotlink protection (common with GitHub raw links).

Host the image on a reliable CDN or cloud storage

Upload your JPG image to an enterprise storage solution like Azure Blob Storage and set the container access level to 'Public read access for blobs only'.

Generate a direct download link

Copy the direct HTTPS URL of the image file. Ensure the URL ends directly with the image extension (e.g., .jpg or .png) and does not contain web viewer parameters.

Test the URL in an InPrivate browser window

Open a private browsing window (Incognito mode) and paste the URL. If it prompts a login screen or a webpage instead of displaying the raw image immediately, the link will fail in Intune.

Verify Image URL Formatting and Hosting Server

Avoid SharePoint Sharing Links: Standard OneDrive or SharePoint sharing links typically load a web interface rather than the raw file, which will result in an Intune configuration failure.

Solution 2

Consult the Microsoft Intune Q&A Community

Because this involves specific Intune policy requirements, Microsoft specialists can help verify your HTTPS link and suggest deployment alternatives.

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Frequently Asked Questions

What does error 406 mean in a Microsoft Intune deployment?

Error 406 stands for 'Not Acceptable'. In the context of Intune wallpaper deployment, it indicates that the endpoint hosting the image file refused the connection from the Intune service, often due to strict server security rules, missing user-agent headers, or rate-limiting.

Why is my GitHub raw image link failing in Intune?

GitHub raw links often employ security measures that prevent automated scripts or external services from hotlinking files directly. This can trigger an error 406. Using dedicated cloud storage like Azure Blob Storage is a more reliable alternative.

Are there size limitations for wallpapers deployed via Intune?

While the exact file size limit can depend on the Windows version, it is highly recommended to keep the wallpaper image size under 2MB to ensure quick download and application on the target devices during the sync process.

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