Outlook "My templates" app is missing and could not be found in the M365 "more apps"-section

This isn't necessarily related, but, according to slipstick.com, Microsoft is about to add e-mail templates in the new Outlook. See https://www.slipstick.com/new-outlook/mail-templates-outlook-windows-and-web/ .

My tenant is experiencing the same issue. At first templates disappeared in New Outlook client (but still worked from web) and then templates in were gone. Not I'm unable to add the app.

I have the same issue in the tenant I manage. None of my users is able to see "My Templates" since this week. I have an open ticket with Microsoft. The support representative told me to report the issue via Admin Center. He said, he will highlight the issue internally. Well, guess what, Microsoft quickly highlighted my report as "No issue found". So much for the highlighting of the issue.
I will let the support know and ask how they are going to move forward with this.

Dear @Thomas-84,

First of all, thank you for your patience so far, and I sincerely apologize that the previous solution did not resolve your issue. You did absolutely the right thing by reporting the problem through the Admin Center. I completely understand how frustrating it is when the “My Templates” feature disappears, especially since multiple users in your organization are affected.

To clarify why it's closed: when you report an issue in the Admin Center, the technical team checks the status at the global tenant level. If no widespread outage is detected, the case is closed as “no issue found.” Only when enough reports come in from multiple tenants will Microsoft escalate and open an official incident.

At this point, the best course of action I can recommend is: Raise a support ticket directly with Microsoft Support (via https://admin.microsoft.com/#/support/requests).

In the ticket, emphasize that several users in your organization are experiencing the same issue, and include details such as when the feature disappeared (e.g., it was available on October 29 but is now missing). Attach screenshots and clearly state that “My Templates” no longer appears under Integrated Apps or in the Marketplace.

This will help the engineering team prioritize the investigation and determine whether this is a policy change or a deployment issue. Sorry for my limitation that as a moderator, as a moderator, I want to make sure guide you toward the most appropriate support path. Since this issue may involve backend account indexing or server-side synchronization, areas I unfortunately cannot access.

Once again, I truly apologize for the inconvenience and appreciate your cooperation in clarifying this matter.

Thank you again for your patience and understanding. I truly hope your issue gets resolved quickly, and I’m here to support you in any way I can.

Best Regards.

Hello @Thomas-84,

Thank you for reaching out to Microsoft Q&A Forum and sharing detailed information about the issue with the “My Templates” add-in, especially the screenshot showing “Something went wrong”. I understand that the sudden disappearance of this add-in is disrupting your users’ workflow.

Currently, there is no official announcement from Microsoft about retiring this add-in. In most cases, this issue is related to deployment settings or the add-in’s status within your M365 environment. While we investigate the root cause, based on my research, here're some suggestions you can try:

1. Use Quick Parts (Best for Outlook Desktop Classic)

• Compose the template content in a new email.
• Highlight the content > Insert > Quick Parts > Save Selection to Quick Part Gallery.
• Name and save the template.
• To reuse, go to Insert > Quick Parts and select the saved template.

2. Use Signatures (Works on OWA, New Outlook & Classic)

• Go to Settings > View all Outlook settings > Mail > Compose and reply.
• Create multiple signatures, each acting as a template.
• When composing an email, select Insert > Signature and choose the desired template.

In the meantime, please contact to your IT Admin to help you check:

1. Verify Deployment in Admin Center

• Sign in to Microsoft 365 Admin Center > Settings > Integrated Apps.
• Locate My Templates and confirm:
  • Is the add-in still deployed?
  • Are affected users included in the assigned group?

2. Check on Outlook Web App (OWA)

• Ask affected users to open OWA in Incognito mode to rule out cache issues.
• Navigate to Get Add-ins > Admin-managed and check if “My Templates” appears.

I found some older cases that might help you troubleshoot further:

• Has My Templates for Outlook been removed from the store?
• Templates are disappearing

Please try these suggestions and coordinate with your administrator to verify the deployment settings. We appreciate your kind patience and understanding that sometimes the initial response may not immediately resolve the issue or there may be some misunderstandings about your scenario, but we would love to hear updates from you and find out further suggestions.

Best Regards.

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