Hi @Jérôme Lucas ,

Welcome to our forum!

Based on my test in Chrome, after I logged in to outlook.office.com, I can install the Outlook PWA successfully. Which install button do you mean? Is it in the below figure?

In order to further confirm if the issue is related to Chrome, it's suggested that you could try in other browser(such as Edge) to check if you can install PWA successfully.


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Answer from ChristyZhang-MSFT on learn.microsoft.com
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Chrome Unboxed
chromeunboxed.com › chrome unboxed - the latest chrome os news › apps › news › how to install microsoft outlook on a chromebook as a pwa
How to install Microsoft Outlook on a Chromebook as a PWA
December 9, 2019 - Head to outlook.com, sign in, and then you can install the app by hitting the plus sign in the right side of your URL bar or clicking Chrome’s 3-dot menu and selecting “Install Outlook.” In general, this won’t do much more than Outlook on the web did before, but installing the PWA will allow the app to be listed alongside your other apps and pinned to your tray.
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The Windows Club
thewindowsclub.com › the windows club › general › how to install outlook on the web as a progressive web app
How to install Outlook On The Web as a Progressive Web App
August 8, 2024 - You can simply “Install” Outlook.com from the address bar by clicking the + sign > Install, and it will be treated as if it’s a native app on Windows PC, macOS or Chromebooks.
Discussions

Outlook PWA reinstall
I have changed my computer and now I can't reinstall PWA outlook app in chrome : the install button never appear in the bar as it was in the past. How to force its installation? More on learn.microsoft.com
🌐 learn.microsoft.com
5
1
September 5, 2022
Trying to install Outlook as a PWA: wrong manifest fiile link on Chrome - Stack Overflow
I'm trying to install Outlook as a PWA (https://outlook.office.com) but the button to install it is not displayed. It is possible on Egde browser, and I was able to install it, but it's annoying fo... More on stackoverflow.com
🌐 stackoverflow.com
Trying to install outlook pwa on a chromebook, as app no longer works/is supported. - Chromebook Community
Skip to main content · Chromebook Help · Sign in · Google Help · Help Center · Community · Chromebook · Terms of Service · Submit feedback · Send feedback on More on support.google.com
🌐 support.google.com
August 16, 2022
Deploying Outlook Web as a PWA app via Edge
msedge_proxy.exe -profile-directory=Default -app=https://website/here Win32 app that creates a shortcut to this path should do it last I checked More on reddit.com
🌐 r/Intune
5
1
December 15, 2024
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Megan V. Walker
meganvwalker.com › using-the-outlook-web-app-as-a-desktop-app
Using The Outlook Web App As A Desktop App -Megan V. Walker
January 28, 2022 - First thing, open up https://outlook.office.com. That’s where you can view your emails online. When you do this, you should notice a little icon on the top of the browser on the right of where you see the URL.
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Medium
medium.com › @julianneagu › outlook-pwa-next-level-email-management-in-2024-7023db39bbde
Outlook PWA: Next-Level Email Management in 2024 | Medium
February 13, 2024 - Outlook PWA: Install by visiting the website and clicking on the prompt — no separate setup is needed.
Find elsewhere
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Stack Overflow
stackoverflow.com › questions › 74475970 › trying-to-install-outlook-as-a-pwa-wrong-manifest-fiile-link-on-chrome
Trying to install Outlook as a PWA: wrong manifest fiile link on Chrome - Stack Overflow
It is possible on Egde browser, and I was able to install it, but it's annoying for me since my default browser is Chrome. When I check what is going wrong in the Chrome Console, I can see it tries to download the manifest file from here https://outlook.office.com/mail/manifests/pwa.json?culture=fr
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TeamDynamix
utk.teamdynamix.com › TDClient › 2277 › OIT-Portal › KB › ArticleDet
Accessing An Email Through Outlook (PWA)
From the Outlook (PWA) window, click the three-dot menu again. Select More Tools > Apps > Install Outlook (PWA).
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Google Support
support.google.com › chromebook › thread › 175421592 › trying-to-install-outlook-pwa-on-a-chromebook-as-app-no-longer-works-is-supported
Trying to install outlook pwa on a chromebook, as app no longer works/is supported. - Chromebook Community
August 16, 2022 - Skip to main content · Chromebook Help · Sign in · Google Help · Help Center · Community · Chromebook · Terms of Service · Submit feedback · Send feedback on
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Reddit
reddit.com › r/intune › deploying outlook web as a pwa app via edge
r/Intune on Reddit: Deploying Outlook Web as a PWA app via Edge
December 15, 2024 -

Just wondering if anyone has had success doing this?

Our organization is changing and most of are users will be on F3 licenses.

Most of our users cannot update the built-in Mail app on Win10/11 to Outlook New as we block the MS Store.

So the solution to that is we create a PWA for Outlook for each user that calls in but I would prefer to automate this and push out to all users or prefer to target ones that have F3 license only.

I did use some online resources but they do not appear to work for me.

Deploying Remote Apps with Intune | Remote Desktop > uses JSON I think to do this

Deploying Office WebApps (PWA) with file handlers via Intune – Andrew Taylor > this is the one I tried

I've created the Configuration Profile in Intune and used these settings for Microsoft Edge:

Microsoft Edge

------------------------------------------------------------------------

Configure list of force-installed Web Apps (User)

Enabled

URLs for Web Apps to be silently installed. (User)

[ { "url": "https://www.outlook.office.com/mail", "custom_name": "Outlook(PWA)", "create_desktop_shortcut": true, "default_launch_container": "window", "fallback_app_name": "Outlook PWA", } ]

Issue - I get the shortcut on the desktop but when I launch it I get a DNS error instead.

EDIT - I asked CoPilot to review my syntax and it found that I had an extra comma after the fallback_app_name so now I got it working. Unfortunately in order to auto-pin to task bar I would have to combine it with a Powershell script.

Correct JSON syntax when you make the profile should be like this:

[
  {
    "url": "https://outlook.office.com/mail/",
    "custom_name": "Outlook (PWA)",
    "create_desktop_shortcut": true,
    "default_launch_container": "window",
    "fallback_app_name": "Outlook PWA"
  }
]
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Microsoft Learn
learn.microsoft.com › en-us › microsoft-edge › progressive-web-apps
Overview of Progressive Web Apps (PWAs) - Microsoft Edge Developer documentation | Microsoft Learn
October 1, 2025 - Progressive Web Apps (PWAs) are built using HTML, CSS, and JavaScript code that's hosted on web servers and that runs in web browser engines. They can either be used directly in a web browser, like a website, or installed on a device from an app store, or by using the app installation feature of a supporting browser.
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Reddit
reddit.com › r/sysadmin › hot take: the "new outlook" pwa has made search usable
r/sysadmin on Reddit: Hot take: The "New Outlook" PWA has made search usable
July 2, 2023 -

Basically title.

For all its faults, including it lacking functionality as basic as reordering folders, the "New Outlook" has finally given me a search experience that is on par with gmail. This may be unpopular, but I really hope they can refine it in time as the lack of local caching from this web based client could really take some pressure off my L1 type requests. The truth is most users are just used to web apps and being plugged directly into their cloud data.

And don't get me started with users who "lost all their contacts" because they've never actually made a contact before and their autocomplete list didn't export from their last device. This was such a problem during our O365 migration that I made a VB script to convert all their sent recipients to contacts.

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Microsoft Store
apps.microsoft.com › detail › 9nrx63209r7b
Outlook for Windows - Free download and install on Windows | Microsoft Store
October 21, 2025 - The new Outlook for Windows is a best-in-class email experience that is free for anyone with Windows. Easily connect and coordinate your personal and work email accounts and calendars in one app. Write clear, concise mails and get intelligent suggestions with built-in AI.
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Zoom
support.zoom.com › hc › en › article
Installing the Zoom for Outlook add-in
January 14, 2025 - The Zoom for Outlook add-in allows you to manage scheduling within the Outlook web and desktop apps.
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Google Play
play.google.com › store › apps › details
Microsoft Outlook - Apps on Google Play
Manage your Gmail, Yahoo Mail, and iCloud inbox and calendars for free with Outlook • Files are accessible right from your inbox, with connected experiences to Microsoft 365, Word, Excel, PowerPoint & OneNote. Access recent attachments from within Outlook, or attach links from OneDrive or other cloud storage • Email organizer equipped with filters, folders & more.
Rating: 4.4 ​ - ​ 10.4M votes
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Softonic
microsoft-outlook.en.softonic.com › home › windows › productivity › e-mail clients › microsoft outlook
Microsoft Outlook - Download
December 4, 2024 - Microsoft Outlook, free and safe download. Microsoft Outlook latest version: Download Microsoft Outlook for Windows: Sending emails and scheduling jus
Rating: 6.5/10 ​ - ​ 3.16K votes
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Sysprobs
sysprobs.com › what-is-outlook-pwa-how-to-install
What is Outlook PWA? How to Install? - Sysprobs
December 28, 2023 - We discuss in detail what Outlook PWA is and how to install and uninstall it from your Windows 10/11 computer. It is a web app that will work on most browsers.