Known Outlook Issues

Features not Available in New Outlook

Note: The information here is correct as of January 28, 2026. For more current information please visit Microsoft's Article here:

Microsoft support article: Feature comparison between New Outlook and Classic Outlook

Some of the features that are not available in New Outlook:

  • Account Support
    • Exchange (on-prem and on-prem ADFS)  (Partially Available)
    • Shared mailbox - Delegate Access  (Partially Available)
  • App framework
    • Access file on network share 
    • Connect to Outlook from a SharePoint site (Partially Available)
    • Custom Forms
    • Notes module (Partially Available)
    • Offline Support (Partially Available)
    • .PST Support (Partially Available)
    • VBA Macro
  • Calendar
    • .ICS file support (Partially Available)
    • Offline Support (Partially Available)
    • Schedule View
    • SharePoint calendar sync
  • Extensibilty
    • COM add-ins
    • Content Forms
    • Microsoft Teams add-in (Teams Integration is native in New Outlook)
    • Outlook Object Model (OOM)
    • Messaging Application Programming Interface (MAPI) 
  • Folders
    • Public Folders (Partially Available)
    • Search Folders (Partially Available)
  • Mail
    • Conditional Formatting (Partially Available)
    • Delay Send Rule (Partially Available)
    • Mail Merge (Partially Available)
    • .MSG Support (Partially Available)
    • Offline Support (Partially Available)
    • .OFT support (Partially Available)
    • Quick Steps (Partially Available)
    • Rules (Partially Available)
    • Import Export Rules
    • Voting Buttons
  • People
    • Business Cards

Teams within Outlook

  1. In Outlook, choose File and then Options.
  2. Select the Add-ins tab of Outlook Options dialog box.
  3. Confirm that Microsoft Teams Meeting Add-in for Microsoft Office is listed in the Active Application Add-ins list
  4. If the Teams Meeting Add-in is listed in the Disabled Application Add-ins list, select COM Add-ins in Manage and then select Go…
  5. Set the checkbox next to Microsoft Teams Meeting Add-in for Microsoft Office.
  6. Choose OK on all dialog boxes and restart Outlook.

If that doesn't fix the issue please use the web version or application for Microsoft Teams.

Reporting Phishing

  1. Open Outlook
  2. Click the View tab in the Ribbon bar
  3. Select Reading Pane
  4. Choose Right or Bottom
  5. Phish Alert button is now available at the top of the message in the Reading Pane and Phish Alert Report is no longer grayed out in the Ribbon when viewing an email

If the following steps don't work please fill out a computer support ticket.

Print Article