1,480 questions with Outlook | MacOS | New Outlook for Mac | For business tags

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How to fix : The error message includes a "Code: -51410" and a "Message: AADSTS900144 Description: (pii), Domain: MSAIMSIDOAuthErrorDomain." on Outlook for Mac?

Error Message: "Something went wrong. [4s8qj]" Troubleshooting Details: The message advises contacting an administrator and sending them the provided information. Specific Error Code: The error message includes a "Code: -51410"…

Outlook | MacOS | New Outlook for Mac | For business
asked 2025-08-12T07:05:30.6166667+00:00
DeboraFhrer-8208 0 Reputation points
commented 2025-08-13T06:42:28.11+00:00
Hin-V 2,075 Reputation points Microsoft External Staff Moderator
2 answers

Outlook, Excel and Word are always crashing at random time.

Hello! MacOS 15.6 (24G84), Microsoft Outlook for Mac Version 16.98 (25060824), License: Microsoft 365 Subscription. I open Outlook, do not even breathe on it, but at random time Outlook just disappears. I run it again, and again after some time it…

Outlook | MacOS | New Outlook for Mac | For business
asked 2025-08-05T04:13:41.9266667+00:00
Timur Zhantassov 0 Reputation points
edited a comment 2025-08-13T02:31:56.8366667+00:00
Timur Zhantassov 0 Reputation points
1 answer One of the answers was accepted by the question author.

For Outlook on Mac, how to stop signature automatically being added to calendar events

This never used to happen, but recently when I create a new calendar event, or edit an existing event, my email signature is automatically added to the notes of the event. I go to Signatures to try to adjust but the only options I can choose is New…

Outlook | MacOS | New Outlook for Mac | For business
asked 2025-07-18T17:32:21.5+00:00
Lee, Renee 55 Reputation points
commented 2025-08-12T20:40:04.85+00:00
Sarah R 0 Reputation points
1 answer

cannot change paragraph spacing in Outlook for Mac

I am using Outlook for Mac version 16.99.1. I no longer have the option to format the line spacing of paragraphs in emails. It defaults to 1.0 spacing between lines, which is too spaced out. There is no longer a "Format Text" option on the…

Outlook | MacOS | New Outlook for Mac | For business
asked 2025-07-29T15:52:05.0533333+00:00
Michael Moulton 5 Reputation points
commented 2025-08-12T15:32:06.7633333+00:00
Jennifer-Navva Milliken 0 Reputation points
1 answer One of the answers was accepted by the question author.

In Outlook for Mac, why wont the font wont changes from aptos despite signature settings

Hi, when replying or forwarding an email, the font defaults to aptos, dispite the fact that my email signatrure is set to Century Gothic for both of these. New emails are defaulting to the correct Century Gothic, just fiine I am 100% sure my fonts are…

Outlook | MacOS | New Outlook for Mac | For business
asked 2025-08-11T18:03:14.5166667+00:00
Philip 20 Reputation points
commented 2025-08-12T05:37:13.4133333+00:00
Philip 20 Reputation points
1 answer

How can I open outlook if it's stuck on the loading page?

When navigating to our Microsoft Outlook inbox in Chrome, the page is stuck on loading. I have tried to use another brower and download the app instead, but to get past the verification stage, I need to log into the email account I'm unable to get…

Outlook | MacOS | New Outlook for Mac | For business
asked 2025-08-09T19:41:43.4333333+00:00
Shop Lovecraft 5 Reputation points
answered 2025-08-11T23:01:50.9066667+00:00
Grant Anderson AU 0 Reputation points
1 answer

shadow. outlook

I am often sending emails from shadow.outlook address eg. * PII Removed * @shadow.outlook.com> I am worried this could be spam or something, using outlook for mac

Outlook | MacOS | New Outlook for Mac | For business
asked 2025-08-05T11:07:00.62+00:00
Akash Gopie 0 Reputation points
commented 2025-08-11T13:48:54.6466667+00:00
Hani-Ng 1,425 Reputation points Microsoft External Staff Moderator
1 answer

Why am I unable to add hyperlinks to photos in Outlook for Mac?

I used to be able to add hyperlinks to photos in Outlook, but that option is no longer available when I right-click an image. I noticed that if I go to Help > Clear Application Data and check all the boxes (including "License"), the…

Outlook | MacOS | New Outlook for Mac | For business
asked 2025-08-11T05:38:46.8833333+00:00
VidCraft 0 Reputation points
answered 2025-08-11T08:08:26.8766667+00:00
Jade-T 3,520 Reputation points Microsoft External Staff Moderator
4 answers

PLEASE tell me how to turn off grammar checking in Outlook (Outlook for Mac)!

I was recently obliged to upgrade Outlook at work. Since then, it has taken to offering me advice I neither want nor need. I have managed to turn off the exasperating Show Text Predictions, but cannot find any way of stopping it underlining words and…

Outlook | MacOS | New Outlook for Mac | For business
asked 2025-08-06T21:39:24.0333333+00:00
Andrew 25 Reputation points
commented 2025-08-11T01:44:19.02+00:00
Nghia-P 2,520 Reputation points Microsoft External Staff Moderator
1 answer

Outlook for Mac -Smtp submission failed. Server 'smtp.gmail.com' Port '587'. --> Unexpected SMTP server response. Expected: 235 = Failure code: 64d3

Hi - I'm using Outlook for Mac. I have a gmail account. It's been working fine until yesterday. It now has problems syncing with the Google server, and sent emails are bounced back with the following message: SmtpSubmissionPermanentException: Smtp…

Outlook | MacOS | New Outlook for Mac | For business
asked 2025-08-05T22:11:05.3166667+00:00
John Carroll 0 Reputation points
commented 2025-08-11T00:41:46.1166667+00:00
Nghia-P 2,520 Reputation points Microsoft External Staff Moderator
1 answer

The add-ins in my IMAP outlook are greyed

Get add-ins is grey and cant use it. How to fix on MAC for IMAP.

Outlook | MacOS | New Outlook for Mac | For business
asked 2025-07-25T16:29:15.96+00:00
Neev Jayesh Bhansali 0 Reputation points
commented 2025-08-07T14:56:36.2333333+00:00
Kai-L 1,320 Reputation points Microsoft External Staff Moderator
4 answers One of the answers was accepted by the question author.

No spelling grammar setting has suddenly disappeared?

Hello Community, Any idea why the autocorrect and spelling grammar setting has suddenly disappeared? And how do you get them back? See pictures Jemand eine Idee warum die Einstellung für die Autokorrektur und Rechtschreibung Grammatik plötzlich…

Outlook | MacOS | New Outlook for Mac | For business
asked 2025-07-31T10:03:33.1933333+00:00
RMG 25 Reputation points
commented 2025-08-07T08:20:20.52+00:00
Jade-T 3,520 Reputation points Microsoft External Staff Moderator
2 answers

Outlook on MacOS is taking a huge amount of space on my harddisk.

I am running out of diskspace on my Macbook. Turned out that the space outlook is taking is huge. How can I reduce the diskspace? I am connected with 2 accounts on the microsoft online exchange servers. I think it has to do with the seach database. When…

Outlook | MacOS | New Outlook for Mac | For business
asked 2025-07-28T21:25:55.8766667+00:00
Conrad Hagemans 0 Reputation points
commented 2025-08-05T06:13:14.0866667+00:00
Nghia-P 2,520 Reputation points Microsoft External Staff Moderator
2 answers

Automate Email attachment download by python script for reporting needs

Hi Team, We have one usecase where customer reports in excel are sent as attachment over email ID and we could subscribe those report to receive on daily bases. We are looking to subscribe those reports for daily and automate process to download…

Outlook | MacOS | New Outlook for Mac | For business
asked 2025-07-31T09:24:38.75+00:00
Sourabh Jain 0 Reputation points
commented 2025-08-01T12:26:40.6833333+00:00
Sourabh Jain 0 Reputation points
2 answers

Why is an event extended 1-day in the new outlook app?

I have an event that goes from 7/19-7/26 but the event appears also on 7/27. Nothing in the event will account for it. What's going on and more importantly, how can I fix it...or is it a bug?

Outlook | MacOS | New Outlook for Mac | For business
asked 2025-07-31T13:48:28.3733333+00:00
Cameron McGough 5 Reputation points
answered 2025-07-31T14:34:18.46+00:00
Cameron McGough 5 Reputation points
2 answers

Outlook stopped filling in email addresses from address book

I cannot get Outlook to pre-fill email addresses any longer suddenly only on the 365 for business email address. It works normally on the online version. I've reset the account, deleted the account and reestablished it, tried the source quit. STILL not…

Outlook | MacOS | New Outlook for Mac | For business
asked 2025-07-22T15:50:11.9333333+00:00
Jim Jeżowski / Acculab 0 Reputation points
commented 2025-07-31T10:25:46.9433333+00:00
Vergil-V 2,115 Reputation points Microsoft External Staff Moderator
2 answers One of the answers was accepted by the question author.

Flag Filter appearing in the Favourites list or task bar

I'm using the flag feature in mark emails for follow up on my side or as a To-Do, however to get a list, the save Flag filter is right at the bottom of my folder list. Is there anything way to bring that up higher or in the task bar?

Outlook | MacOS | New Outlook for Mac | For business
asked 2025-07-23T04:43:42.2833333+00:00
Anthony McCabe 20 Reputation points
accepted 2025-07-31T00:36:55.7933333+00:00
Anthony McCabe 20 Reputation points
2 answers One of the answers was accepted by the question author.

Outlooks asks for email server password every three months

Every few months outlook asks for the password for the IMAP email server but when I put in the correct password it says its incorrect and I have to go and change the password in my server dashboard and then it seems to work. Sometimes I have to put in…

Outlook | MacOS | New Outlook for Mac | For business
asked 2025-07-30T12:20:28.74+00:00
Sarah Leckie 20 Reputation points
answered 2025-07-30T19:51:17.4566667+00:00
Sarah Leckie 20 Reputation points
1 answer

Outlook for Mac Crashing After Update to Version 16.88.1

The Outlook app for Mac is crashing after an update to version 16.88.1 (24082514) on a MacBook Air M2. Attempts to auto-update result in a crash with the following error details: Process: Microsoft Outlook [40567] Path: …

Outlook | MacOS | New Outlook for Mac | For business
asked 2025-07-25T07:18:34.6433333+00:00
DHANASEKAR NELLAIAPPAN 0 Reputation points
edited a comment 2025-07-30T13:40:24.8+00:00
Tammy-Ng 1,970 Reputation points Microsoft External Staff Moderator
1 answer

Esportare posta da microsoft for Outlook

Buongiorno, utilizzo Outlook for Mac (new non legacy) su un mac mini 2023. La versione è la 16.99 (25071321) con licenza Office Home & Business 2021. Il Mac ha solo 256Gb di memoria di cui 80Gb sono occupati solo dagli archivi di Outlook. Vorrei…

Outlook | MacOS | New Outlook for Mac | For business
asked 2025-07-23T13:00:24.26+00:00
Davide Ferri 0 Reputation points
commented 2025-07-30T08:24:39.94+00:00
Gabriel-N 3,705 Reputation points Microsoft External Staff Moderator