Quick Steps to Enable Dark Mode in All Outlook Platforms

Mark Regan
Published: August 12th, 2026 • 4 Min Read

Direct Answer: There is no need to install any third-party plugin or add-on to enable dark mode in Outlook since the platform itself has a built-in option to do so. Whether it’s Outlook web, Outlook Classic, or Outlook New, each one of them has appearance settings available in which a user just needs to toggle on dark mode.

Do you also like the modern dark theme to work patiently with your Outlook and are not able to find the simplest way to do that? If yes, then this blog is meant for you only. In this detailed guide, we share the tried, tested, and most updated steps to turn on dark mode in Outlook web, classic, and new without any hassle.

Why Do Users Want to Enable Dark Mode in Outlook?

The option to turn on and off the dark theme was introduced only a few years back. The purpose was simple that is provide ease of use. Thus, the different aspects for doing this include,

A darker interface of Outlook reduces eye strain or pressure when working for hours on emails, calendars, tasks, and so on.
When the user has to maintain dim lighting in the room or surroundings, a dark theme helps to work comfortably.
Some of the users also find a dark mode in Outlook less distracting or helps to pay more attention to work.
The dark background helps to stand out minute details and therefore supports working more efficiently.
If the user has all of their applications in dark theme, they often seek a way to match Outlook as well and hence turn on dark mode in Outlook.
When working at night, choosing this mode is best since it ensures the light is not harsh enough to disturb nighttime comfort.

How to Turn on Dark Mode in Outlook New?

First of all, run Outlook New on your device.
Now, click on Settings (gear-like icon) on the top-right ribbon.
From the left pane, select General and then choose Appearance from the adjacent panel.
Further, from the given options of Choose Your Mode, click on Dark card.
Finally, click on Save, and the process to switch to dark mode in Outlook New is complete.

Summary: Outlook New> Settings> General> Appearance> Choose Your Mode> Dark> Save

How to Enable Dark Mode in Outlook Classic?

Run Outlook Classic on your system.
Click on File from the top-right corner.
From the bottom of the left panel, click on Office Account.
Now, search for Office Theme and click on its drop-down arrow.
From the list, select the Dark option.
With this, you are done and can get back to work in dark mode.

Summary: Outlook Classic> File> Office Account> Office Theme> Dark

Steps to Turn on Dark Mode in Outlook Web

Open Outlook web on your browser.
Now, click on the Settings icon in the top-right corner.
Then, choose General from the left panel.
Further, click on Appearance.
Next, search for the Choose Your Mode section, and click on Dark.
Finally, hit the Save button, and it’s done.

Summary: Outlook Web> Settings> General> Appearance> Choose Your Mode> Dark> Save

Tips and Tricks to Turn on Dark Mode in Outlook

Before following any step, make sure to check the Outlook version you are using since the steps vary.
In case you do not find the option, update your Outlook.
Adjust the font size and system brightness if you are unable to work comfortably in dark mode.
Before making any changes, make sure to backup Outlook emails to hard drive as a precaution against uncertain data loss.

Conclusion

In short, changing the theme of Outlook is not a hard-and-fast rule. Anyone can easily do that by simply following the steps mentioned in this blog post. No hard-core technical knowledge or support of external tools is required to enable dark mode in Outlook web, classic, or new.