---
title: "Mac OS X 10.11 And Lower Security Certificate Fix"
canonical_url: https://support.digitalphotogallery.com/articles/article/68d7bb92-9e26-11ec-8467-d6a716821bb8
short_url: https://dpg.support/apmm
category: "Troubleshooting > General"
locale: en
updated_at: 2022-03-07T15:30:39Z
source: Digital Photo Gallery Support
---

# Mac OS X 10.11 And Lower Security Certificate Fix

If you are using an older version of OS X (Version 10.11 or lower) and for any reason are unable to update your operating system, you may have experienced errors when accessing DPG and other websites. This is due to an expired security certificate. If you're using the affected operating system and see a page displaying the "This Connection Is Not Private" error, watch the video below to learn how to correct the issue. 

> 💡 **Tip:** To avoid these kids of problems, it's always best to keep your OS updated to the latest version where possible.

[▶ Video](https://cache.dpg.media/hyqelgcvfopo/videos/55f2826e-9e26-11ec-a668-9a053431b8ee/5b8e856a-9e26-11ec-a668-9a053431b8ee.mp4)

[Link to download new certificate](https://letsencrypt.org/certs/isrgrootx1.der) as described in the video. 

After installing the updated certificate we recommend using [Google Chrome](https://www.google.com/chrome/) as your browser, as it is frequently updated unlike older Safari versions.