Using classic Outlook for Windows in business environments
The missing My Templates button is currently a known issue with Outlook for Microsoft 365 and related add-ins.
When composing an email in classic Outlook, the View Templates button can disappear from the ribbon, and the My Templates add-in may also be missing from All Apps. In many cases, other add-ins like Viva Insights or Salesforce may be missing as well. This is being tracked as service incident MO1243496, caused by a recent service change that enforced stricter authentication and blocked add-in deployment and user authentication for add-ins.
Microsoft is actively deploying a fix. As the fix rolls out, the My Templates button and other affected add-ins should reappear without local client changes.
If tenant-level configuration needs to be checked or re-enabled by an admin, the following Exchange Online PowerShell steps can be used to confirm that the My Templates add-in is enabled for the organization:
- Connect to Exchange Online PowerShell as a tenant administrator. See: Connect to Exchange Online PowerShell.
- (Optional for support) Start a transcript to capture output:
Start-Transcript -Path "C:\mytemplates\MySession.txt" -Append - Check the status of the My Templates add-in:
get-app -Identity a216ceed-7791-4635-a752-5a4ac0a5eb93 - If needed, enable the add-in at the organization level:
Set-App -Identity a216ceed-7791-4635-a752-5a4ac0a5eb93 -OrganizationApp -Enabled $true - List all add-ins to verify status:
get-app
If the button is still missing after the service incident is reported as resolved and the add-in is confirmed enabled, collect logs as requested by Microsoft Support (for example, a performance trace in new Outlook) and open a support case so engineering can review tenant-specific telemetry.
References: