Fix it if Shared Mailbox Not Showing in Outlook!

The Shared Mailbox in Outlook allows multiple users to manage emails in a single Inbox. Sometimes, Shared Mailbox is not showing in Outlook, which is a common issue that most users sometimes face when running Outlook. However, users can use a few practices to fix the Shared Mailbox not showing in Outlook issue. This blog will briefly discuss the various workarounds and reasons why the shared mailbox disappears from Outlook email clients.

Causes behind Shared Mailboxes not showing up in Outlook

There are several factors that can affect the Shared Mailbox and make it disappear from Outlook. Here are some common reasons behind it:

  • Improper permission: If users do not have the right permission to access the Shared Mailbox in Outlook, the mailbox will not show in Outlook.
  • Damaged Outlook Profile: Sometimes, the corrupted Outlook Profile can prevent the Shared Mailbox from showing up in Outlook.
  • Connection Issues: The issues in connection with the Exchange Server can also affect the Shared Mailbox and make it disappear from Outlook.
  • Outdated Outlook Program: Working with outdated Outlook can also lead to this issue, and the Shared Mailbox will not show up in Outlook.

We have shared some common causes behind the shared mailbox not showing up in Outlook. The reasons can also vary from user to user, and there can be other reasons behind this problem.

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What are the ways to fix the shared mailbox that is not showing up in Outlook?

The foremost step the users can take is to check that the permissions are correct for accessing the Shared Mailbox. Users can do it by contacting their IT Admin or by themselves if they have access to check the permissions.

If the permissions are correct, then follow each solution below and know how to fix the delegated mailbox not showing up in Outlook.

1. Manually Adding the Shared Mailbox:

    If the Shared Mailbox is not showing up in Outlook, try to add it manually using the steps below.

    • Launch Microsoft Outlook, move to the File tab, Account Settings, and click the Account Settings.
    • Select your email account in the Email tab and hit the Change button.
    • After that, click the More Settings and tap the Advanced button.
    • Now, choose the Add button under the Mailboxes section.
    • Enter the name and email address of the shared mailbox and tap the OK button.
    • Afterward, click Apply and Ok to save changes.
    • Then, restart your Outlook program and check if the Shared Mailbox appeared.

    2. Create New Outlook Profile:

      If the shared mailbox is not showing up in Outlook, and you failed to solve it using the above method. This problem might be caused by a corrupted Outlook Profile. Let us share the steps to create a new Outlook Profile and make the Shared Mailbox appear in Outlook.

      • Close the Outlook program if it is open and move to the Control Panel.
      • Tap the Mail or Mail (Microsoft Outlook) option.
      • Then, choose the Show Profiles and click the Add to create a new Outlook profile.
      • Follow the instructions and enter your account details to set up a new Outlook profile.
      • Lastly, make this new profile default and open your Outlook.
      • Then, ensure that the shared mailbox is now appearing in Outlook.

      This is what users can do if this problem is due to a corrupted Outlook profile.

      3. Enable Cached Exchange Mode:

        Generally, the Cached Exchange Mode is used to work offline and speed up mailbox access. Sometimes, it can also cause problems and prevent the shared mailbox from showing up in Outlook.

        • Open Microsoft Outlook and navigate to the File section.
        • Choose the Account Settings and click the Account Settings.
        • Then, select your email account and hit the Change button.
        • Tap the More Settings and move to the Advanced tab.
        • Go to the Cached Exchange Mode and enable it if it is not
        • If it is already enabled, turn it off and enable it again.
        • Then, restart your Outlook and check if the Shared Mailbox appears in Outlook.

        4. Repair Microsoft Outlook:

        The Shared Mailbox disappeared from Outlook issue can persist because of Microsoft Outlook. So, here we will share the steps to repair Microsoft Outlook and make the Shared Mailbox appear in Outlook.

        • Close Outlook and its related tasks. Then, open the Control Panel on your PC.
        • Go to Programs and click the Programs and Features option.
        • Select Microsoft Office from the list and hit the Change button.
        • Now, click Repair and follow the ongoing instructions.
        • Once the repair is done, restart Outlook and check your Outlook.

        These steps can help you easily repair Microsoft Outlook and fix the Shared Mailbox not showing in Outlook problem.

        5. Update Outlook Email Client:

        The Shared Mailbox is not showing in Outlook, which can be because of an outdated version of your email client. If you update your Outlook to a newer version, this can fix this issue.

        • The first step is to open the Outlook program.
        • Move to the File tab and select the Office Account.
        • Thereafter, choose the Product Information section, click the Update Options, and hit the Update Now button.
        • Wait till the Outlook gets updated and restart your Outlook.

        Users can follow the above workarounds to resolve the issue of the shared mailbox not showing up in Outlook. All these solutions tackle the specific cause of this problem in users accessing the shared mailbox.

        It’s Your Turn Now!

        If you’ve tried the standard troubleshooting steps and your shared mailbox still refuses to appear in Outlook, it might be time for a more permanent architectural change. Sometimes, persistence issues stem from the inherent limitations of shared mailboxes or underlying profile corruption.

        A highly effective way to resolve this is by migrating the Shared Mailbox to a User Mailbox. This ensures the mailbox has its own licensed credentials and better stability within the Outlook client.

        The Recommended Solution

        To perform this transition safely without losing data or messing up your folder structure, the Shoviv Exchange Server Suite (also known as the Shoviv Office 365 Migration tool) is the premier choice.

        While many tools only focus on repairs, Shoviv provides a comprehensive Office 365 tenant-to-tenant migration path. It doesn’t just fix corrupted PST or OST files; it allows you to seamlessly move data from a shared environment directly into user mailboxes.

        Why choose Shoviv for this fix?

        • Data Integrity: It preserves the original folder hierarchy and email metadata during the migration.
        • Versatility: Beyond just Office 365, it handles EDB, OST, and PST files from on-premises Exchange or Outlook clients.
        • Efficiency: It bypasses the common sync errors that cause shared mailboxes to “disappear” by establishing a fresh, stable user-based connection.

        Note: Converting to a user mailbox typically requires an active license (like Microsoft 365 Business Standard or Enterprise), but it provides a much more robust experience for users who rely heavily on that specific mailbox.


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