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

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

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

it is October 2024 and this is still happening.

I haven't encountered any ACCESS DENIED error or a repetitive / pointless SIGN IN request in my NEW Outlook for several weeks.

NEW Outlook is a key part of very big 24H2 update, generally available from October 1, 2024 (it's only for Windows 11). Microsoft's intention is to introduce NEW Outlook to all Windows users later this year.

And ... I tested today - 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 --> Microsoft has probably prevented going back to the "old" version, as it previously planned to do at some point.

How do you revert to the old version?