@alvanx I just was messing around with it and trying to test. I was able to login and then install a PWA for Outlook if I went in under https://outlook.live.com/mail/0/ (well, showed that after I opened the site after logging in)
Then of course, when I click the install thing on the right hand side of the Search/URL bar, you get the window below that pops up in that spot:
Are you completing logging in and accessing the inbox prior to trying to install? You should ideally be able to do the same as I pulled up here. (Yes, I’m on Windows 11 Pro rather than Mac. I think it’s supposed to work the same way. If you say it’s not showing up, we can try to bring Mattches or someone over to figure out the disconnect)
Thank you! Yes, I was logged in. Unfortunately, I can’t access https://outlook.live.com/mail/0/, I get redirected to https://outlook.live.com/mail/, where I don’t see the install button. Are you able to install the PWA on that URL, if you can even access it?
What I will say is when I originally logged in, it didn’t have the install option. I navigated to a different page and then back to outlook. It was then that it appeared. Not sure why it originally didn’t want to do it. So not sure if it will work the same way for you?
And since I have PWA installed, it’s instead showing me this icon , which when I mouseover says To open this link, choose an app. If I click on that, it ends up showing that I can open with Outlook (PWA).
That’s a great idea and something I tried a few times, as well - unfortunately, to no avail. I’m wondering if it has something to do with
platform - I’m on Mac Silicon
Exchange account type - I have a business account, perhaps you have a personal account?
Brave security settings? I tried disabling them, no change
Brave site settings - looking at this right now, but not seeing much. I just reset them and deleted cookies. Unfortunately, no change after I re-authenticated.
But perhaps it is significant that I wasn’t able to install the PWA from other Chromium-browsers, either. That may point towards an issue with my specific Exchange account type, but I’m speculating…
You can’t install PWA in InPrivate windows (if you are testing there, just making sure)
The install button is just a nice integration, but it is not the only place to install PWA.
You can go to ☰ → and then it says Install Outlook (PWA) and it will do the same.
But the real button is in ☰ → More Tools → Create Shortcut, any page can be turned into a ‘shortcut’, the PWA ones, might have some extra features, like extensions integration with the system so when you double click a file with that extension it opens the PWA but usually even if they are labeled as PWA, they are just the same as if they were not.
Came here to say what @anon57438784 stated above — @alvanx please try using the Main Menu --> More Tools --> Create shortcut option to install the site as a PWA on your system. I do notice, however, that when you do see the option in the address bar to install a PWA, you’ll also see this appear on the main menu by name, but if you don’t see that option you’ll need to use the Create shortcut option.
For example, for me when I got to Outlook and login, I see the following option in the main menu:
, which when I mouseover says 
