> ## Documentation Index
> Fetch the complete documentation index at: https://help.lanten.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Lanten isn't showing in Outlook

> Work down this checklist — it resolves almost every missing-add-in case.

Installed Lanten but can't see it? Work through these in order — they're arranged from most to least common.

<AccordionGroup>
  <Accordion title="It's installed — just hidden behind the Apps button">
    The most common case isn't missing, it's buried. Open an email and click **Apps** in the toolbar (in classic Outlook, look on the ribbon). Lanten should be in the flyout.

    Fix it properly so this stops happening: [pin the panel](/getting-started/pin-lanten) and [put Lanten's icon on every message](/outlook/reading-pane-actions).
  </Accordion>

  <Accordion title="You're signed into the wrong account or mailbox">
    Add-ins install to a **mailbox**, not to the app. If Outlook is showing a different account than the one you connected during setup — or you're looking at a shared mailbox — Lanten won't be there. Check the account in the top-right of Outlook matches the mailbox you set Lanten up with.
  </Accordion>

  <Accordion title="You're in a shared mailbox">
    Shared mailboxes behave differently with add-ins depending on how they're set up and which Outlook you're in. See [Shared inboxes](/outlook/shared-inboxes) for what's supported.
  </Accordion>

  <Accordion title="Your Outlook version isn't supported — or you just switched versions">
    Check [New vs classic Outlook](/outlook/new-vs-classic) for the support matrix. And if you've recently flipped the New Outlook toggle: the add-in is still installed — open any email → **Apps** → Lanten, then re-pin (pinning doesn't carry across the switch).
  </Accordion>

  <Accordion title="Your IT admin controls add-in installs">
    In some organisations, Microsoft 365 is configured so only admins can install add-ins — the Add button is greyed out, or Lanten disappears after install. Forward [For IT administrators](/troubleshooting/it-admins) to whoever runs your Microsoft 365; deploying Lanten centrally takes them a few minutes.
  </Accordion>

  <Accordion title="Outlook is being Outlook — restart and re-sync">
    * Fully quit and reopen Outlook (on Windows, check it's not still in the system tray).
    * On the web: hard-refresh (Ctrl/Cmd+Shift+R) or try a private window — extensions and stale caches hide add-ins.
    * Still nothing? Sign out of Outlook, sign back in, and reopen an email.
  </Accordion>
</AccordionGroup>

## Still stuck?

Email [support@lanten.ai](mailto:support@lanten.ai) with:

1. Which Outlook you're using (new / classic / web / Mac — see [how to tell](/outlook/new-vs-classic))
2. Whether it's your own mailbox or a shared one
3. A screenshot of an open email, toolbar included

Those three things usually make the answer obvious on our side.