---
title: Outlook has disabled an add-in what should I do?
description: Plugins in the Outlook Classic Desktop app can be automatically disabled if they crash or cause Outlook to start slowly
---

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# Outlook has disabled an add-in what should I do?

## Plugins in the Outlook Classic Desktop app can be automatically disabled if they crash or cause Outlook to start slowly

### What are add-ins?

A plugin (also called an add‑in) is a small extra tool you can add to Outlook to give it new features. Think of it like adding an app to your phone — Outlook still works the same, but the plugin adds something extra that Outlook doesn’t do on its own.

**Note**: The new version of the Outlook app does not have COM add-ins like Outlook Classic. It uses apps instead which are controlled by the IT Team. Please raise a support ticket if there is an app you require for your role in Outlook.

### Which add-ins do I need in Outlook Classic?

The only plugin that you need is the **Microsoft Teams Meeting Add-in**. This helps create Teams meetings in your Outlook calendar. Other plugins, usually installed by other applications like Adobe/Foxit to create PDFs, are, in most cases, unnecessary and can slow Outlook down. For PDF creating use the print function and choose **Microsoft Print to PDF**.

### How do I manage Outlook Classic add-ins?

1. If Outlook has disabled an add-in, select **File** \> **Manage COM Add-Ins**. Select to open. 
     1. To permanently enable an add-in without Outlook switching it off, select the add-in, and under **Options** select **Always enable** \> **Apply**
     
   **![](https://help.stalbansdiocese.org/hs-fs/hubfs/image-png-Jan-30-2026-11-44-05-5978-AM.png?width=670&height=422&name=image-png-Jan-30-2026-11-44-05-5978-AM.png)**
2. To see all add-ins, select **File** \> **Options** \> **Add-ins** 
     1. Add-ins are listed by active, inactive and disabled.
     2. To turn on/off the active/inactive add-ins, go to **Manage** at the bottom \> select **COM Add-ins** \> select **Go...** \> check or uncheck the add-in(s) \> **OK**
     3. To enable disabled add-ins \> go to **Manage** at the bottom \> select **Disabled Items** \> select **Go...** \> select the **add-in** \> under **Options** select **Always enable** \> **Apply**
     
   **![](https://help.stalbansdiocese.org/hs-fs/hubfs/image-png-Jan-30-2026-12-04-09-1904-PM.png?width=1886&height=1541&name=image-png-Jan-30-2026-12-04-09-1904-PM.png)**

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