Calibri Light no longer available as a default font on Outlook 2025 for Mac

Question

Calibri Light no longer available as a default font on Outlook 2025 for Mac

Tilly Wicks 50

The new Outlook has just updated on my Mac. This has removed Calibri light as my default font for emails, our companies default font is Calibri Light - so this is a problem.

If you go to Settings > Fonts > "New email" OR "Reply or forward". Calibri Light is not listed under available Default fonts- only Calibri, and if you select Calibri a styles panel to choose Light does not appear as some suggest.

Weirdly, Calibri Light is still available to choose as a "Preview" font and is available as a font choice when composing an email. However, I write a large amount of emails a day and would like not to have to select the font each time.

Following instructions from a previous thread I installed the font Calibri Light into my mac Font Book and restarted outlook and my Macbook. Still not available as an option.

Jake 0 Reputation points

2025-11-18T10:20:25.9933333+00:00

Also having this problem... Please advise when this will be fixed!

3 answers

Your answer

Jake 0 Reputation points

2025-11-18T10:20:25.9933333+00:00

Also having this problem... Please advise when this will be fixed!

Answer 1

AP 15

I have been able to use a workaround for this issue, at least temporarily.

Under the Help menu, selecting "Clear Application Data" and clearing all of the available choices seems to bring back the full font selection menu after Outlook restarts.

I have tried this fix on two computers:

Outlook for Mac 16.103.2 (25112216) and Mac OS 15.6.1 (24G90) - worked immediately
Outlook for Mac 16.103.2 (25112216) and Mac OS 26.1 (25B78) - required a couple of attempts until it worked

I'll likely have to redo this every time Outlook updates (which seems to be almost weekly), but at least the fonts stick when composing and reading emails now.

I hope this is helpful!

Jake 0 Reputation points

2025-12-02T16:24:07.0266667+00:00

Worked for me first time 26.0 (25A354) - thank you!
Gaye Miller 40 Reputation points

2025-12-02T23:38:43.6633333+00:00

THANKS. Worked for me first time. I've lost all my pretty themes - but I don't care. I have my fonts!!!
Laura Ovadia 0 Reputation points

2025-12-03T15:16:14.8633333+00:00

Thank you very much AP. I think we're all very grateful for this workaround 🙏
Sarah Jorgensen 0 Reputation points

2026-03-09T10:26:51.02+00:00

This worked first time for me too on macOS 26.3.1 (25D2128) after months of manually changing the font in each email! Thank you!
Gaye Miller 40 Reputation points

2026-03-24T22:03:41.5833333+00:00

Hi AP. I've been using the above workaround successfully for the past couple of months. Now, this does not work. I've logged in and out, cleared all the data, and still cannot bring back the lovely default font Calibri Light. The current version is now Version 16.107.1 (26031524). Has anyone else experienced the same setback?
AP 15 Reputation points

2026-03-24T22:16:49.57+00:00

Hello Gaye,

Sadly I’ve experienced the same issue and am no longer able to access the “Font” and “Spelling/Grammar” menus with the above workaround since an Outlook update. I’ve had to revert to Classic Outlook to access correct font handling.

Hopefully the devs at Microsoft are listening and can fix this longstanding issue or another user is able to find a solution.

Best,

AP

Answer 2

Lazo Jerez, Oscar 0

I used the following workaround in MacOS:

I made a copy of the Calibri Light file (calibril.ttf), changed the name of the file to calibri.ttf and then replaced the original Calibri file in the folder Resources > DFonts, inside the Outlook package. Now Calibri and Calibri Light are the same font for Outlook, and therefore I'm able to set up Calibri Light as my default font. ;)

Gaye Miller 40 Reputation points

2026-03-24T22:40:02.99+00:00

Hi Oscar. Can you provide further info where to locate the DFonts in Outlook resource folder. ARe you able to provide the full strand to find the outlook packaage? I can't locate them on my computer to try your workaround with changing the name of the Calibri font. Thanks.
AP 15 Reputation points

2026-03-25T18:10:19.9166667+00:00

Please note that substituting the font file in the default directory does appropriately allow messages to be composed in Calibri Light. However, once the emails are sent, the text is converted back to Aptos. This is irrespective of the "default" font chosen in the "Fonts" menu.
Lazo Jerez, Oscar 0 Reputation points

2026-03-26T01:33:10.92+00:00

Dear @Gaye Miller , the path is the following: '/Applications/Microsoft Outlook.app/Contents/Resources/DFonts/Calibri.ttf'
Lazo Jerez, Oscar 0 Reputation points

2026-03-26T01:36:58.7833333+00:00

Dear @AP, I just tested it sending an email to a gmail account and it works nicely.

Answer 3

Anonymous

Dear Tilly Wicks,

Welcome, and thank you for sharing your issue on the Q&A forum.
We understand the importance of maintaining consistency with your organization’s branding standards, and we appreciate your diligence in attempting to resolve the issue.

Following the recent update to the New Outlook on macOS, it has been observed that Calibri Light is no longer available as a selectable option in the default font settings under:

Settings > Fonts > New email
Settings > Fonts > Reply or forward

While the font remains accessible during manual composition and within the preview list, it cannot currently be designated as the default font through the standard configuration interface.

We recommend the following steps to further investigate and potentially resolve the issue:

Verify Font Installation: Ensure that all Calibri font variants, including Calibri Light (calibril.ttf), are correctly installed via Font Book and located in the appropriate system font directories.
Clear macOS Font Cache: Font visibility issues may be related to cached data. You may reset the font cache by executing the following command in Terminal: Then restart your Mac.
Configure Font via Outlook Web App (OWA): Visit https://outlook.office.com, navigate to Settings > Mail > Compose and reply, and attempt to set Calibri Light as your default font. This configuration may synchronize with your desktop application.
The New Outlook for Mac may not support font style variants (e.g., Light, Bold) within the default font selection menu. This appears to be a design limitation and may affect other fonts as well.

We sincerely regret any inconvenience this may cause and appreciate your patience as we work to identify a suitable solution. Should you wish to escalate this matter or submit feedback to Microsoft, we would be happy to assist.

Please feel free to contact us if you require further support

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click ""Comment"".

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Tilly Wicks 50 Reputation points

2025-10-24T11:17:23.1166667+00:00

Thank you Tammy. I have tried options 1 & 3 and no luck. Option 2 seems to be missing the command on how to clear macOS font Cache.

I do believe the problem is option 4 - a design limitation - which is a shame and may mean I stop using the Outlook app. Is there a timeframe on when they may fix this? Am I able to escalate this matter as it is quite frustrating for myself and our team members who use a MacBook.
Anonymous

2025-10-24T11:36:20.37+00:00
Dear Tilly Wicks,
Thank you for your response. Your feedback is very important to us, and I truly appreciate you taking the time to share your experience.

Based on the information you've provided, I’d like to clarify Option 3 clearing the macOS font cache. You can try the following command in Terminal:

sudo atsutil databases -remove

After running the command, please restart your Mac. This process helps refresh the system font cache and may allow Outlook to recognize newly installed fonts.

In addition, if the issue persists, you can escalate it directly to Microsoft from Outlook for Mac:

Open Outlook for Mac

Go to Help > Contact Support

Fill in the issue details and click Start Conversation

Microsoft will collect diagnostic logs and respond via the macOS notification center. Contact Support in Outlook for Mac – Microsoft Guide

If the desktop app does not allow escalation, you can also submit feedback via Outlook Web App (OWA):

Log in at https://outlook.office.com

Click the Settings icon > Help > Feedback

Describe the issue with Calibri Light not appearing in the default font settings

Please feel free to try these steps, and if anything, new arises, don’t hesitate to share it. I’m always here and ready to assist you further.

Warm regards
Tilly Wicks 50 Reputation points

2025-10-27T11:31:42.6433333+00:00

Hello Tammy,

I tried clearing my macOS font cache and restarting my computer - this did not work sadly.

I will now trying to contact support as you have directed.
Anonymous

2025-10-27T11:56:55.0733333+00:00

Dear Tilly Wicks,
Thank you for your response.

I’m truly sorry to hear about the issue you’re experiencing.

Please consider reaching out to the support team using the steps I previously shared. A support representative will be able to guide you further and help identify the most suitable solution for your situation.

I sincerely hope your issue will be resolved soon.

Warm thanks again for your patience and for sharing your experience.
Allie Mount 5 Reputation points

2025-10-28T11:56:55.66+00:00

@Tilly Wicks @Anonymous I'm having the same issue and none of this has resolved it, so I don't believe it's an internal systems issue, it appears to be related to Outlook. Tilly, have you found a fix?
Tilly Wicks 50 Reputation points

2025-10-28T12:08:44.5533333+00:00

Hi Allie, I got the following response from Microsoft Support:

Thank you for sharing the details regarding the incident. We have identified this issue as a bug, and our team is actively investigating it. At this time, we are unable to provide an exact timeline for the fix. However, please ensure that your Outlook application remains updated, as all fixes will be released through future updates. We appreciate your patience and understanding while we work to resolve this matter. If you have any further questions or need assistance, please feel free to reach out.

Thank you.

So it looks like it will be fixed - just unsure when. Sorry I couldn't be more help.
Christina S 0 Reputation points

2025-11-03T18:53:58.52+00:00

I am also having the same issue!
Victoria Warner 0 Reputation points

2025-11-06T19:42:47.9233333+00:00

Agree with the need to fix this. I have zero desire to change the font each time, but I dislike all the other fonts so much, that's what I'm doing. Hoping this is fixed soon.
Gaye Miller 40 Reputation points

2025-11-15T21:33:54.2866667+00:00

I have gone so far as to delete Microsoft Office and download the July Office version, and still i can't revert back and get Calibri Light to be selected via the Outlook Settings. I'm wondering whether it's a Mac Tahoe issue now.
Jake 0 Reputation points

2025-11-18T10:21:45.6133333+00:00

Anyone know how to recommend this for a bug fix?

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Calibri Light no longer available as a default font on Outlook 2025 for Mac

3 answers

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