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How to update the Microsoft 365 add-in to enable support of Outlook mobile apps?
How to update the Microsoft 365 add-in to enable support of Outlook mobile apps?
Ira | Newoldstamp avatar
Written by Ira | Newoldstamp
Updated yesterday

Note: The add-in is supported in the Outlook app on Android and iOS starting in version 4.23.52.0. You must also have a Microsoft 365 subscription to run this feature.

We are excited to let you know that we have deployed a new version of our add-in that works in the Outlook app on iOS and Android OS and is available for beta testing.
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To enable support of Outlook mobile apps, please follow these steps:
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1. Ensure that you are using the latest Newoldstamp Add-in version 2.1.
In this step, please download the latest app version from Microsoft AppSource here.
Also, you can check our guide on how to install the Microsoft Add-in in the admin center.

Note: If you still have an old version of the app, please go to the admin center and delete the old app immediately after downloading the new app. To remove an old app, please go to Microsoft 365 admin center > Settings > Integrated apps > Deployed apps > Add-ins > find and remove the old add-in.


2. Next, manually download a new manifest file from this page: https://gitlab.com/new_old_stamp/office-addins/-/blob/main/public/manifest.xml?ref_type=heads.

On the right-hand side of the page, click the Download button.

3. Open the Microsoft 365 admin center, go to Settings, Integrated apps, and the Add-ins page.


4. Click the deployed Newoldstamp add-in, then click Update add-in.


5. Select "I have the manifest file on this device", choose file, and click Update the add-in.
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​Note:Microsoft 365 can take up to 48 hours to process Outlook add-ins, and you may need to relaunch the Outlook app.

6. After up to 48 hours, open your Outlook app on your mobile phone and enjoy your signature.

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If you have any other questions or concerns, please contact us anytime.
​We'll gladly help!

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