---
title: "How to Enable Outlook Plugin"
slug: "how-to-enable-outlook-plugin"
updated: 2026-08-07T02:34:12Z
published: 2026-08-07T02:34:12Z
canonical: "help.12dsynergy.com/how-to-enable-outlook-plugin"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.12dsynergy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# How to Enable Outlook Plugin

> [!NOTE]
> The **12d Synergy Outlook Plugin** only works with the **Classic** version of **Microsoft Outlook**.

If the **12d Synergy** tab is not appearing in your MS Outlook menu bar, you can enable it in one of the following ways:

#### 1. Add-ins via Outlook Options

1. In the **Classic** version of **Microsoft Outlook**, select the **File** menu > **Options** option. ![](https://cdn.document360.io/36833d89-59e3-46a5-b491-e9aa1b524a85/Images/Documentation/10.1(1).png) The **Outlook Options** window is displayed.
2. Select the **Add-ins** tab on the left. ![](https://cdn.document360.io/36833d89-59e3-46a5-b491-e9aa1b524a85/Images/Documentation/10.2(1).png)
3. Ensure that **COM Add-ins** option is selected in the **Manage** list and click the **Go** button. The COM Add-ins prompt is displayed.
4. Select the following checkboxes.

![](https://cdn.document360.io/36833d89-59e3-46a5-b491-e9aa1b524a85/Images/Documentation/10.3.png)
  - **12d Synergy Outlook Plugin Loader**
  - **12d Synergy Outlook Plugin V5** or **12d Synergy Outlook Plugin V6**, whichever is available.
5. Click the **OK** button and restart **Microsoft Outlook**. The **12d Synergy** plugin is displayed as a menu option in **Microsoft Outlook**. ![](https://cdn.document360.io/36833d89-59e3-46a5-b491-e9aa1b524a85/Images/Documentation/10.4.png)

#### 2. Slow and Disabled COM Add-ins

1. In the **Classic** version of **Microsoft Outlook**, select the **File** menu > **Options** option. The **Outlook Options** window is displayed. ![](https://cdn.document360.io/36833d89-59e3-46a5-b491-e9aa1b524a85/Images/Documentation/10.6.png)
2. Select the **Slow and Disabled COM Add-ins** option by clicking the **Manage COM Add-ins** button in the **Account Information** section. The **Add-ins** prompt is displayed. ![](https://cdn.document360.io/36833d89-59e3-46a5-b491-e9aa1b524a85/Images/Documentation/1.55.png)
3. Expand the **Options** link, select the **Always enable this add-in** option and click the **Apply** button. ![](https://cdn.document360.io/36833d89-59e3-46a5-b491-e9aa1b524a85/Images/Documentation/10.6(1).png)
4. Click the **Close** button and restart **Microsoft Outlook**. The **12d Synergy** plugin is displayed as a menu option in Microsoft Outlook. ![](https://cdn.document360.io/36833d89-59e3-46a5-b491-e9aa1b524a85/Images/Documentation/10.4.png)

#### 3. Registry to Set Load Behaviour

> [!WARNING]
> ⚠️ **Important Disclaimer**
> 
> The Windows Registry contains critical system and application configuration settings. Incorrect changes to the registry can cause Microsoft Outlook, Microsoft Office, any other applications, or Windows itself to behave unexpectedly.
> 
> These instructions should only be performed by users with administrative privileges who understand the associated risks, or under the guidance of your IT Support team. Before making any changes, consider creating a backup of the relevant registry keys or a system restore point.
> 
> 
> 
> 12d Synergy accepts no responsibility for issues arising from incorrect registry modifications.

> [!NOTE]
> It is suggested that you use this method only if the two above-mentioned procedures do not work. If you need further assistance, please reach out to the 12d Synergy Support team.

1. Click the **Windows Start** button and type **regedit** in the search bar.

> [!WARNING]
> If you do not have administrative privileges on this system, you cannot perform this procedure.
2. Navigate to **Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\Outlook\Addins\**. The **Registry Editor** window is displayed.
3. Access the **12dSynergy Outlook Plugin** as shown in the image below.

![](https://cdn.document360.io/36833d89-59e3-46a5-b491-e9aa1b524a85/Images/Documentation/reg1(1).png)
4. Right-click the **LoadBehavior** value in the right panel, and select the **Modify** option. ![](https://cdn.document360.io/36833d89-59e3-46a5-b491-e9aa1b524a85/Images/Documentation/reg2.png)
5. Enter **3** in the **Value data** box and click the **OK** button.
6. Repeat the above steps for any other **12dSynergy Outlook Plugin** in this location.
7. Close the **Registry Editor** window and restart **Microsoft Outlook**.

The **12d Synergy** plugin is displayed as a menu option in **Microsoft Outlook**. ![](https://cdn.document360.io/36833d89-59e3-46a5-b491-e9aa1b524a85/Images/Documentation/10.4.png)