Microsoft is giving New Outlook a way to look more like the classic client it replaced, adding a built-in “Outlook Classic” theme that mimics the older app’s look and feel. The goal is to make the jump to the modern web-based client feel less jarring for people who have stuck with the original Outlook for years.
The toggle lives under Settings > General > Appearance in New Outlook, and when turned on, it restyles the interface to echo the familiar Classic Outlook experience. Microsoft says the theme adjusts “visual styling, layout, typography, icons, and selected interactions” to better match the older client.
But before you expect a full-blown transformation, keep in mind this is still just a theme. New Outlook remains a web app, and no skin can recreate the underlying experience of the native Win32 program it’s trying to imitate.
What the “Outlook Classic” theme actually does
According to Microsoft, the new setting is available in both Outlook on the web and New Outlook for Windows. The company describes it as “a new optional setting … that adjusts the experience to more closely resemble classic Outlook for Windows,” as noted in its Message Center notice (MC1458476).
The idea is to help people moving from Classic Outlook without altering the actual capabilities of the modern version. Microsoft is careful to point out that the “modern version” it’s referring to is New Outlook itself.
The toggle can be switched on or off at any time, and it won’t be enabled by default for most users. However, Microsoft may use it as part of its broader transition strategy for people who are strongly attached to the classic interface.
For example, if a Classic Outlook user is eventually moved to New Outlook, Microsoft could automatically apply the classic theme to make the new client feel more familiar. “As part of a phased rollout, Microsoft will enable the setting by default for some users moving from classic Outlook to the new Outlook. Those users can change the setting at any time,” the company explained.
Why Microsoft is reaching for familiarity
New Outlook has been around for about three years, and while it has improved in recent months, it’s still playing catch-up with features that have lived in Outlook Classic for years. That includes offline support and, more recently, PST file support.
Microsoft is also still working to close the gap, which is partly why it pushed back the forced installation of New Outlook on enterprise PCs to early 2027. But there’s one thing a feature update simply can’t fix: the look and feel of the original client.
Some users have been vocal about their preference for the classic interface, and Microsoft appears to be responding to that resistance by offering a visual compromise rather than forcing a hard switch. In practice, this signals that the company still sees the classic experience as the benchmark users are comparing against.
What the theme won’t do
It’s important to understand the limits here. A theme can change styling, layout, icons, and some interactions, but it cannot recreate the underlying Classic Outlook experience because the two apps are built differently. Outlook Classic is a native Win32 application, while New Outlook is built on WebView2.
Microsoft clarified that the theme does not change the actual interface or behavior of Classic Outlook itself, since it only applies to Outlook on the web and New Outlook for Windows.
The feature also won’t force you onto New Outlook if it’s installed alongside Classic Outlook. “This feature does not automatically migrate users from classic Outlook to the new Outlook and does not affect or override any existing administrator configurations used to manage new Outlook availability or migration experiences,” Microsoft noted.
That last point matters for IT admins: existing Group Policy, Intune, or other management settings won’t be disturbed by the theme’s availability, so fleet configurations stay intact.
What this means for you
For everyday users who have resisted the switch, this is a low-stakes concession. If the web-based New Outlook ever feels too foreign, you can turn on the classic theme to soften the visual transition — though it won’t restore the deeper, native behavior you might be missing.
It’s also a signal that Microsoft knows it can’t simply force people over the line. The company still plans to move users toward New Outlook in 2027, but there will be an opt-out option. Keep in mind that opting out now may not stick forever, in case Microsoft launches another migration attempt down the road.
How to get it
The “Outlook Classic” theme is rolling out to New Outlook users right now. If you don’t see it yet, that’s expected — the setting is still being distributed. Once it reaches your client, head to Settings > General > Appearance and toggle it on.
You can switch it back to the standard look at any time, so there’s no commitment involved. It’s a small concession from Microsoft, but for people who value familiarity over native performance, it may be enough to make the modern client feel a little more like home.
Source: Windows Latest
Over to you: Would an ‘Outlook Classic’ theme be enough to keep you from switching, or are you sticking with the classic app entirely?
