> For the complete documentation index, see [llms.txt](https://support.docstudio.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.docstudio.com/user/platform-settings-and-troubleshooting/how-to-view-external-documents-using-microsoft-office-viewer.md).

# How to View External Documents Using Microsoft Office Viewer

Microsoft Office Viewer lets you preview supported external attachments in DocStudio. When it’s enabled, you can open files directly in the browser. When it’s disabled, files are available for download only.

### Enable Microsoft Office Viewer (admins)

<figure><img src="/files/mYvsgkAr4wTwR5RExIVN" alt=""><figcaption></figcaption></figure>

{% hint style="warning" %}
Only an **Account Owner** can enable Microsoft Office Viewer.

A corporate account admin is a user with the **Account Owner** role in a company account with a verified and active domain. For details, see [How to Add a Corporate Account Admin](/admin-panel/users-and-user-roles/how-to-add-a-corporate-account-admin.md).
{% endhint %}

1. Open the **Admin panel**.
2. Open **Account settings** tab.
3. Enable the **View external documents with Microsoft Office Viewer** toggle.
4. In the confirmation modal, review the notice and click the <img src="/files/RQH3I2ejh5YL6pBpN2mk" alt="" data-size="line"> button.
5. Click the <img src="/files/ACG5de7RE8J5HuWqUniH" alt="" data-size="line"> button.

For details, see the [Microsoft Services Agreement](https://www.microsoft.com/uk-ua/servicesagreement).

### Supported formats

{% columns %}
{% column %}

* PDF
* XLS
* XLSX
  {% endcolumn %}

{% column %}

* DOC
* DOCX
* PPT
* PPTX
  {% endcolumn %}
  {% endcolumns %}

### Disabled preview

When preview is disabled, supported formats are available for download only.

{% hint style="info" %}
DOC, DOCX, and PDF files are available for viewing and downloading even when Microsoft Office Viewer is disabled.
{% endhint %}

### Notes and limitations

* Preview with Microsoft Office Viewer is not available for unregistered users.
* Unsupported formats are available for download only.
* Password-protected files are not displayed.
* Users with attachment download restrictions cannot access these files.