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[SOLVED] System Folders Missing From Office 365 Mailbox

The strategies in this post help you to fix the system folders missing from Office 365 mailbox. System folders are important for users but what if they are not visible to users. I am going to show you an easy fix to solve this problem.

Let’s dive right in.

The screenshot below shows no deleted items folder is available on the user mailbox. It’s a hybrid environment and the mailbox is hosted in cloud.

System folders missing from Office 365 mailbox

When I tried to create a folder named Deleted Items, I received an error message that the folder is already exists on a mailbox but it’s not visible for some reason.

microsoft outlook 365

Let’s follow a quick fix to get rid of the issue.

  • Download the 32-bit of MFCMAPI and extract the file.
  • Launch mfcmapi.exe and click OK through the intro screen.
  • On the Tools menu, click Options.
  • Make sure that “Use the MDB_ONLINE flag when calling OpenMsgStore” and “Use the MAPI_NO_CACHE flag when calling OpenEntry” are checked. Click “OK”.
outlook office 365
  • On the Session menu, click Logon
  • Select the Outlook profile for the affected mailbox, and click OK
  • Double-click the email address which represents the desired mailbox
  • Expand Root Container
  • Expand Top of information Store
  • Locate and select the folder that appears missing in Outlook, and check the value of the PR_ATTR_HIDDEN to determine if it is set to True, as shown in the following figure.
office 365 mailbox
  • If PR_ATTR_HIDDEN shows a value of True, right-click the PR_ATTR_HIDDEN property and select Edit Property
  • Uncheck the Boolean checkbox and click OK.
microsoft office 365
  • Make sure the the PR_ATTR_HIDDEN property is False
System folders missing from Office 365
  • Close all MFCMAPI windows, and restart Outlook
System folders missing from Office 365 mailbox

The deleted items folder is now visible on the mailbox. These steps can be followed for other system folders such as Inbox and Sent Items.

Want to improve your Exchange Online experience for better productivity? Check out the tips and tricks mentioned here.

Now I’d like to hear from you:

Did I miss anything? Or maybe you have a question about something that I covered.

Either way, I’d like to hear from you. So go ahead and leave a comment below.

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