Access Denied in New Outlook

Not tested but...

Old "Mail" should still be installed (at least it is here on my Win 11 23H2 22631.4317) and should still work fine. You can find it just writing "mail" in the Start search bar... So you can probably just uninstall Outlook New and continue using Mail. Remember to re-assign it as the default mail program in Windows.

Check if you have Mail still installed from PowerShell (admin), no output at all means it's not present:

Get-AppxPackage -AllUsers "Microsoft.windowscommunicationsapps" | Select Name, PackageUserInformation

If Mail is not installed, it should still be available from the MS-Store (Mail and Calendar), or you can use this from PowerShell (admin):

Get-AppxPackage -AllUsers "Microsoft.windowscommunicationsapps" | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"} 

If commands fail due to restricted execution policy use from PowerShell (admin), and then try again:

Set-ExecutionPolicy Unrestricted  

Uninstall Outlook New from PowerShell (admin):

Get-AppxPackage -AllUsers "Microsoft.OutlookForWindows" | Remove-AppxPackage

Not tested but...

Old "Mail" should still be installed (at least it is here on my Win 11 23H2 22631.4317) and should still work fine. You can find it just writing "mail" in the Start search bar... So you can probably just uninstall Outlook New and continue using Mail. Remember to re-assign it as the default mail program in Windows.

Check if you have Mail still installed from PowerShell (admin), no output at all means it's not present:

Get-AppxPackage -AllUsers "Microsoft.windowscommunicationsapps" | Select Name, PackageUserInformation

If Mail is not installed, it should still be available from the MS-Store (Mail and Calendar), or you can use this from PowerShell (admin):

Get-AppxPackage -AllUsers "Microsoft.windowscommunicationsapps" | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"} 

If commands fail due to restricted execution policy use from PowerShell (admin), and then try again:

Set-ExecutionPolicy Unrestricted  

Uninstall Outlook New from PowerShell (admin):

Get-AppxPackage -AllUsers "Microsoft.OutlookForWindows" | Remove-AppxPackage

I have Windows 11 Pro – 23H2 – OS build is also 22631.4317

As I said I can no longer go back to the "old" version = Classic Outlook, because in my NEW Outlook there is no longer a slider in the upper right corner. (SCREENSHOT)

And there is NO OTHER WAY to go back easily to the "old" version! EVERY time I click on the "old" version's icon --> NEW Outlook open.

That method you suggest is quite complicated and "risky" to use PowerShell (admin) for a normal user.

![](https://learn-attachment.microsoft.com/api/attachments/2d5c7f7e-420b-4f64-b334-87b68cdc21bb?platform=QnA

The new outlook app does not use PST or OST files.

im getting the same issue. with the denied message. it then opens outlook in 2 internet tabs to sign in and just repeats until I get the message on outlook

Hmmm… can't reach this page

after trying this a few times I got a quick message popup before it went to the previous message and that is hmmm... can't reach this page. it looks like the webpage at https://outlook.office.com/mail/oobe?nativeversion=1.2024.300&sessionid=( id I don't know if this is personal and links to my account so ill leave that out)ooberedirect=gsaf&loadmoduel=%2fmail%25 might be having issues or it may have moved permanently to a new web address.

And if we are not dealing with this damn issue, then the latest update sucked *ss, kept me bussy for over half a day to finaly let it update instead of failing every damn time, on top of that it setted my language to another language after update, can't donwload english US anymore, it just wont, and on top of that it logged me out EVERYWHERE.. Thanks microsoft for being such an idiots!