One Outlook has been leaked
Hi All,
Microsoft works since a while at "One Outlook", a simplified Outlook Client based on OWA.
There has been a leak from an early Version and i've downloaded and installed it.
The Setup is very short and after a few seconds you are promted with a Login Dialog.
![](https://icewolffile.blob.core.windows.net/$web/202205/OneOutlook_01.jpg)
There is an Option for Import (but i skipped it)
![](https://icewolffile.blob.core.windows.net/$web/202205/OneOutlook_02.jpg)
That's how it looks like
![](https://icewolffile.blob.core.windows.net/$web/202205/OneOutlook_03.jpg)
If you want to block the Login with the new Client you can do that with the following Exchange Online cmdlet
Get-CASMailbox -Identity a.bohren@icewolf.ch | fl *enabled*, *disabled*
Set-CASMailbox -Identity a.bohren@icewolf.ch -OneWinNativeOutlookEnabled $False
![](https://icewolffile.blob.core.windows.net/$web/202205/OneOutlook_04.jpg)
After that OneOutlook can't be used.
![](https://icewolffile.blob.core.windows.net/$web/202205/OneOutlook_05.jpg)
One Outlook is based on OPX (OWA Powered Experiences) which depend on Edge WebView2 and renders diffrent Parts of OWA in a new Window.
![](https://icewolffile.blob.core.windows.net/$web/202205/OneOutlook_06.jpg)
Things to know about the new Outlook for Windows
![](https://icewolffile.blob.core.windows.net/$web/202205/OneOutlook_07.jpg)
Project Monarch “One Outlook” Build Leaks
Regards
Andres Bohren
![](https://icewolffile.blob.core.windows.net/$web/logos/Exchange_logo.png)