'%3e%3cpath%20d='M8%200C12.4183%200%2016%203.58172%2016%208C16%2012.4183%2012.4183%2016%208%2016C3.58172%2016%200%2012.4183%200%208C0%203.58172%203.58172%200%208%200ZM11.6162%204.38379C11.2257%203.99337%2010.5927%203.99338%2010.2021%204.38379L8%206.58594L5.79785%204.38379C5.40732%203.99334%204.77429%203.99329%204.38379%204.38379C3.99331%204.77429%203.99335%205.40733%204.38379%205.79785L6.58594%208L4.38379%2010.2021C3.99348%2010.5927%203.99341%2011.2257%204.38379%2011.6162C4.77426%2012.0066%205.40734%2012.0065%205.79785%2011.6162L8%209.41406L10.2021%2011.6162C10.5927%2012.0066%2011.2257%2012.0067%2011.6162%2011.6162C12.0067%2011.2257%2012.0066%2010.5927%2011.6162%2010.2021L9.41406%208L11.6162%205.79785C12.0066%205.40735%2012.0066%204.77429%2011.6162%204.38379Z'%20fill='%23080E17'%20fill-opacity='0.46'/%3e%3c/g%3e%3cdefs%3e%3cclipPath%20id='clip0_3761_713'%3e%3crect%20width='16'%20height='16'%20fill='white'/%3e%3c/clipPath%3e%3c/defs%3e%3c/svg%3e)
How to Fix Unsecure Connection Warning for metadata.templates.cdn.office.net
Question details
Users need to resolve a browser security warning indicating that the connection to metadata.templates.cdn.office.net is unsecure.
- Product
- Microsoft 365 Office
- Device & OS
- not provided
- Scenario
- Accessing Microsoft 365 online services or downloading Office templates through a web browser.
- Observed behavior
- The web browser blocks access and displays an unsecure connection warning for the hostname metadata.templates.cdn.office.net.
Ensure your web browser is fully updated to the latest version and verify that your system's date and time settings are correct, as incorrect clocks can trigger false SSL certificate warnings.
Verify Microsoft 365 Service Incident Resolution
This warning is primarily caused by a known Microsoft 365 Office service incident regarding their CDN certificate, which has been escalated and marked as resolved by Microsoft.
Microsoft support agents have confirmed that this specific hostname warning is related to a Microsoft 365 Office service incident rather than an Azure configuration problem. Because this involves Microsoft's own Content Delivery Network (CDN) for Office templates, the fix must come from their servers.
Now that the incident is reportedly resolved, you simply need to clear your local cache to fetch the renewed security credentials.
Log into your Microsoft 365 Admin Center and navigate to the Service Health dashboard to confirm if the incident related to 'metadata.templates.cdn.office.net' is officially marked as resolved.
Press Ctrl + Shift + Delete in your web browser, select 'Cached images and files', and click 'Clear data' to remove old cached certificates.
Completely close all browser windows and reopen them, then try accessing the Office service or template library again.
Clear Local SSL State
Clear outdated SSL certificates cached by your Windows operating system that might still be triggering the unsecure connection warning even after Microsoft has fixed the issue.
Switch to WPS Office for a Seamless and Secure Experience
If you are tired of dealing with Microsoft 365 service incidents, unsecure CDN connection warnings, and template loading errors, try WPS Office. It provides a lightweight, highly secure, and fully compatible offline and online alternative for all your document needs.
- 1. Download the Installer: Visit the official WPS Office website and click the free download button for your operating system.
- 2. Install the Software: Run the downloaded installer file and follow the quick on-screen instructions to set up WPS Office.
- 3. Open Your Documents: Launch WPS Office and instantly open your existing Word, Excel, and PowerPoint files without any conversion.
Frequently Asked Questions
Why does metadata.templates.cdn.office.net show an unsecure connection warning?
This warning usually occurs when the SSL security certificate for Microsoft's Content Delivery Network (CDN) expires or experiences a backend service glitch. Your web browser blocks the connection to protect your data from potentially unverified servers.
Can I fix this error by changing my Microsoft Azure configuration?
No. According to Microsoft Community Support Specialists, this specific hostname warning is related to Microsoft 365 Office services, not Azure. Modifying your Azure network or local configurations will not resolve a Microsoft-side CDN certificate issue.
Is it safe to bypass the unsecure connection warning to access my templates?
It is generally not recommended to bypass browser security warnings. Instead, wait for Microsoft to resolve the service incident, or clear your browser cache and SSL state to see if the renewed certificate has already been issued.
How do I know when the Microsoft 365 service incident is fully resolved?
You can monitor the Service Health dashboard in the Microsoft 365 Admin Center if you have admin privileges, or check official Microsoft Community forums where support agents post status updates on escalated service incidents.
