The Email Templates / My Templates feature in classic Outlook for Windows is delivered through an Outlook add‑in. When the icon suddenly disappears from the ribbon, it is typically not caused by a local configuration change.
Based on current information, this behavior aligns with an active Microsoft service incident (EX1238375). This incident affects access to organizational add‑ins such as My Templates and Viva Insights across multiple platforms, including classic Outlook for Windows. The issue is tenant‑level and server‑side, meaning it cannot be restored manually by individual users.
As a first step, I recommend reviewing the AI‑generated response shown in the thread, as it closely reflects the current understanding of this service behavior.
- Please refer to the following article: My Templates are missing from Outlook
Next, please contact your organization’s IT administrator and ask them to submit a support request through the Microsoft 365 Admin Center. You can refer to the following resource: Get support - Microsoft 365 admin | Microsoft Learn. When opening the case, it may be helpful to disable the AI Support Assistant to ensure the request is reviewed directly by a support engineer.
As a temporary workaround, you may consider using Outlook Signatures for frequently reused content. While this does not fully replace the functionality of My Templates, it can help reduce disruption while the issue remains under investigation. For guidance, please refer to the following Microsoft article: How to add and change an email signature in Outlook - Microsoft Support
Thank you so much for your understanding and patience while this behavior is addressed. I will keep an eye on this incident and let you know if there are any major updates.
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