Subfolders on Classic Outlook not showing on New Outlook for Windows

Question

Subfolders on Classic Outlook not showing on New Outlook for Windows

Barberena, Roger 0

On Classic Outlook I have a dozen of subfolders that when I switched on Friday to the new Outlook were showing and everything was working, today that I was opening Outlook again to work on it all thise subfolders are no longer showing, but if I switch over the classic they are there, any idea on how to resolve this, btw is an exchange account

Anonymous

2025-05-07T03:09:57.5733333+00:00

Hi Barberena, Roger,

Just checking in to see if above information was helpful. If you have any further updates on this issue, please feel free to post back. If you think my reply is helpful to you, please remember to mark it as an answer. Warm thanks.
Robert Cras 0 Reputation points

2025-05-08T09:56:54.1233333+00:00
Hi,

I have the same issue. In new Outlook there are 2 folders missing that are visible when I return to classical outlook.

The 2 folders are visible in:

e-mail provider web interface

iPhone email

New Outlook on Macbook

If they exist, please close New Outlook>Press Win+R> Type command olk.exe –clearLocalState>Enter to log out and log back into your account to see if the subfolders appear.

This did not work
McTyier, Jay 0 Reputation points

2025-05-16T21:10:00.6566667+00:00

This issue caused me to waste 45 minutes of productivity, working with my institutinal IT folk to figure out what happened to two subfolders under a main folder on a group email account. They just disappeared from three days ago today. I can find the files that were in those subfolders by searching the inbox, and they appear to say they are in the subfolder, in that their display in the search results carries the subfolder name of the subfolder I created to hold them--and is now invisible. After 45 minutes, the solution was, as here, why not work in Classic Outlook until 2030 when MS will sunset it?

My question to anyone on MS who care to comment: do you use new Outlook at the MS headquarters? Doesn't it make you crazy, and inefficient to not be able to trust your email to keep your messages where you left them, or is this a serendipitous inconvenience and workflow stone in the road that only your customers who pay your license fees for your products get to deal with?
Sean S 0 Reputation points

2025-06-05T19:21:44.3833333+00:00

The command needs two dashes,
olk.exe --clearLocalState

But it doesn't fix the issue, it's too bad there's not a simple way to see the calendar subfolders like in classic. Right now have a mix of users on new and some on classic. We have some old company calendars all in subfolders and about have of the users on New can see those subfolder but some others can't. I'm still searching for a way to find those calendars in subfolders, it would be great to have the Calendars folder added back to the shared mailbox folder in the new outlook.

2 answers

Your answer

Anonymous

2025-05-07T03:09:57.5733333+00:00

Hi Barberena, Roger,

Just checking in to see if above information was helpful. If you have any further updates on this issue, please feel free to post back. If you think my reply is helpful to you, please remember to mark it as an answer. Warm thanks.
Robert Cras 0 Reputation points

2025-05-08T09:56:54.1233333+00:00

Hi,

I have the same issue. In new Outlook there are 2 folders missing that are visible when I return to classical outlook.

The 2 folders are visible in:

e-mail provider web interface

iPhone email

New Outlook on Macbook

If they exist, please close New Outlook>Press Win+R> Type command olk.exe –clearLocalState>Enter to log out and log back into your account to see if the subfolders appear.

This did not work
McTyier, Jay 0 Reputation points

2025-05-16T21:10:00.6566667+00:00

This issue caused me to waste 45 minutes of productivity, working with my institutinal IT folk to figure out what happened to two subfolders under a main folder on a group email account. They just disappeared from three days ago today. I can find the files that were in those subfolders by searching the inbox, and they appear to say they are in the subfolder, in that their display in the search results carries the subfolder name of the subfolder I created to hold them--and is now invisible. After 45 minutes, the solution was, as here, why not work in Classic Outlook until 2030 when MS will sunset it?

My question to anyone on MS who care to comment: do you use new Outlook at the MS headquarters? Doesn't it make you crazy, and inefficient to not be able to trust your email to keep your messages where you left them, or is this a serendipitous inconvenience and workflow stone in the road that only your customers who pay your license fees for your products get to deal with?
Sean S 0 Reputation points

2025-06-05T19:21:44.3833333+00:00

The command needs two dashes,
olk.exe --clearLocalState

But it doesn't fix the issue, it's too bad there's not a simple way to see the calendar subfolders like in classic. Right now have a mix of users on new and some on classic. We have some old company calendars all in subfolders and about have of the users on New can see those subfolder but some others can't. I'm still searching for a way to find those calendars in subfolders, it would be great to have the Calendars folder added back to the shared mailbox folder in the new outlook.

Answer 1

Hi Barberena, Roger,

Welcome to our forum!

Did you have any specific operation before the issue occurs?

To further confirm if the issue is more related with Outlook Desktop Client, it is suggested please log your account in to web version to see if the subfolders exist.

If they exist, please close New Outlook>Press Win+R> Type command olk.exe –clearLocalState>Enter to log out and log back into your account to see if the subfolders appear.

If not, please check subfolders in Classic Outlook, ensure they are not deleted accidentally.

In addition, if the folder pane is minimized, you won't be able to see your folders. Please go to View> Folder pane>Folder list> Show to display all folders in New Outlook. More information: Show all folders in Outlook - Microsoft Support

If all above do not work, you may want to continue using Classic Outlook as a workaround.

Hope it helps.

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Answer 2

Tim Stevenson 20

I am having the same issue in my org with 3 people reporting the same issue.

Ended up contacting Microsoft and they said it might be the number of subfolders. However one of the effected mailboxes has one subfolder.

Ill try update if I ever get a resolution.

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Subfolders on Classic Outlook not showing on New Outlook for Windows

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