208 questions with Outlook | Web | Outlook on the web for business | Security tags

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1 answer

Cannot change the password on the primary account

We cannot change the password on the primary account. The account contains a .onmicrosoft.com (created when the account was created years ago). This is not an issue related to 'basic' resetting of the password, but instead related to the internal way…

Outlook | Web | Outlook on the web for business | Security
asked 2026-05-01T10:48:22.04+00:00
Mark Ustik 0 Reputation points
commented 2026-05-01T14:40:01.8133333+00:00
Mark Ustik 0 Reputation points
2 answers

outlook lock out

I have an employee who is constantly being locked out of an email account. The email account is from his predecessor but uses it to monitor because the previous employee worked her for 30 years and left abruptly on bad terms. he has his own email…

Outlook | Web | Outlook on the web for business | Security
asked 2026-04-20T22:05:02.6366667+00:00
Admin Michael Timmerman 0 Reputation points
commented 2026-04-21T23:26:02.6833333+00:00
Sophie N 14,210 Reputation points Microsoft External Staff Moderator
2 answers

I got my account stolen

I got one of my accounts taken by some one and he changed the email and the password and the phone number and I can’t login to my account .

Outlook | Web | Outlook on the web for business | Security
asked 2026-03-31T13:08:14.7933333+00:00
Mohammed Almohammed 0 Reputation points
edited the question 2026-04-15T07:42:00.7566667+00:00
Thanmayi Godithi 9,445 Reputation points Microsoft External Staff Moderator
2 answers

Email hacked

My employees email was hacked and the inbox deleted. All my clients received bogus emails. I changed the password on that email account. What else can I do? How can I recover that inbox?

Outlook | Web | Outlook on the web for business | Security
asked 2026-03-27T14:56:05.7466667+00:00
Ken Billburg 0 Reputation points
commented 2026-03-29T15:09:03.7566667+00:00
Vy Nguyen 10,315 Reputation points Microsoft External Staff Moderator
2 answers

How do I acquire logs for device being blocked from Outlook account

My PC was recently blocked from our company Outlook account. I would like to pull logs to see when/ how it happened.

Outlook | Web | Outlook on the web for business | Security
asked 2026-03-27T20:44:36.0133333+00:00
Chris Weatherford 0 Reputation points
commented 2026-03-28T19:54:24.3+00:00
Ryan-N 12,580 Reputation points Microsoft External Staff Moderator
2 answers

Labeled and encrypted Mails in Shared Mailbox

Depending on the encryption configuration, it is not possible to open a message encrypted via a Sensitivity Label from a shared mailbox using Outlook New or Outlook on the Web. This results in an endless loop prompting the end user to open the message in…

Outlook | Web | Outlook on the web for business | Security
asked 2025-08-13T12:31:45.19+00:00
Zollt, Philipp 0 Reputation points
commented 2026-03-24T17:07:04.71+00:00
Jim FA 0 Reputation points
2 answers

Our organization cannot send email. 550 5.1.8 bad outbound sender. Admin unavailable.

I am an employee at a small company and we currently cannot sent emails outbound but received them. The only person with the admin account is away for surgery and has two factor authentication. We do not want to reset their password but also need help…

Outlook | Web | Outlook on the web for business | Security
asked 2026-03-19T21:32:00.5466667+00:00
Estimating 0 Reputation points
answered 2026-03-19T22:29:32.0333333+00:00
Chris Duong 8,575 Reputation points Microsoft External Staff Moderator
1 answer

cannot longer connect my python app to Outlook

Hello Team I am testing my python script # EXPLICITLY set the redirect_uri to match your Azure Portal settingtarget_redirect = 'https://login.microsoftonline.com/common/oauth2/nativeclient'if account.authenticate(scopes=['basic', 'mailbox',…

Outlook | Web | Outlook on the web for business | Security
asked 2026-03-19T16:56:39.4733333+00:00
ITF 0 Reputation points
answered 2026-03-19T18:30:38.16+00:00
Chris Duong 8,575 Reputation points Microsoft External Staff Moderator
1 answer

New Outlook Trust Persistence Failure — Enterprise & Government Risk

From: Network Engineer, Large Government Sector. Summary The New Outlook client introduces a regression in trust handling that materially disrupts enterprise and government operations. Specifically, the “Trust sender” action does not persist across…

Outlook | Web | Outlook on the web for business | Security
asked 2026-03-06T14:33:33.8+00:00
Tim 0 Reputation points
edited an answer 2026-03-06T18:14:02.21+00:00
Alexis-NG 15,680 Reputation points Microsoft External Staff Moderator
1 answer

No resolution on Service Request: S775 continues despite no block detected

Hello, I am posting this in reference to Service Request regarding ongoing Outlook.com / Hotmail deliverability problems from IP [Moderator note: Personal information removed]. We are consistently receiving the following SMTP response when sending to…

Outlook | Web | Outlook on the web for business | Security
asked 2026-03-03T11:16:06.21+00:00
Pablo Asenzo 0 Reputation points
edited an answer 2026-03-05T14:02:42.7633333+00:00
Tamara-Hu 14,035 Reputation points Microsoft External Staff Moderator
2 answers

550 5.7.708 – Access denied, traffic not accepted from this IP

Outbound mail blocked at tenant level” “IP address reputation issue” “Low reputation IP – new tenant scenario

Outlook | Web | Outlook on the web for business | Security
asked 2026-02-24T18:10:41.9133333+00:00
Kirsten Nelis 0 Reputation points
edited an answer 2026-02-24T19:16:41.09+00:00
Killian-N 9,560 Reputation points Microsoft External Staff Moderator
2 answers

Emergency: Locked out of Admin Account - MFA Loop (Authenticator app never configured)

Hi, I am seeking urgent assistance as I am completely locked out of my Microsoft 365 Business account and cannot access my email or the Admin Center. My business operations are currently at a standstill. The Issue: Account: Information deleted for…

Outlook | Web | Outlook on the web for business | Security
asked 2026-02-20T15:27:05.5333333+00:00
Maddy haseeb 0 Reputation points
answered 2026-02-20T15:51:48.1433333+00:00
Ryan-N 12,580 Reputation points Microsoft External Staff Moderator
2 answers

I can't log in using Microsoft Authentication.

About a month ago, my phone went missing, and I'm trying to log into my business account, but it's stuck on Microsoft Authentication. I can't do anything now. I really want to log in, but I'm blocked at this point. I have the password, but I can't…

Outlook | Web | Outlook on the web for business | Security
asked 2026-02-16T04:14:15.4266667+00:00
psbiogas 5 Reputation points
commented 2026-02-17T05:45:50.4+00:00
Jade Ng 11,330 Reputation points Microsoft External Staff Moderator
2 answers

My business outlook email has been hacked and I cannot change my password.

HELP! Error submitting password change. Business email has been hacked! Help, please.

Outlook | Web | Outlook on the web for business | Security
asked 2026-02-04T15:17:56.8333333+00:00
Rodney Stouffer 0 Reputation points
commented 2026-02-06T07:09:40.6366667+00:00
Vivian-HT 15,530 Reputation points Microsoft External Staff Moderator
1 answer

Microsoft won't let me change password

Microsoft won't let me change a password and I have been notified of suspicious logins.

Outlook | Web | Outlook on the web for business | Security
asked 2026-02-02T12:02:40.7533333+00:00
jcorbeil 0 Reputation points
commented 2026-02-05T15:39:54.89+00:00
jcorbeil 0 Reputation points
1 answer

my authenticator issue

dear team, my office email doesn't have an authenticator app login or anything yet it asks for a authenticator verification when i try to log in please help me with this matter ASAP

Outlook | Web | Outlook on the web for business | Security
asked 2026-01-23T06:58:40.5733333+00:00
Janaka Bamunuarachchi 0 Reputation points
commented 2026-01-26T13:24:42.8066667+00:00
Demi-N 15,655 Reputation points Microsoft External Staff Moderator
1 answer

Locate a sender

I need to know who sent me a harmful/threatening email. IP address is 52.103.10.54 Moved from: Community Center | Not monitored

Outlook | Web | Outlook on the web for business | Security
asked 2026-01-11T16:08:03.21+00:00
Jasmine Givens 0 Reputation points
edited the question 2026-01-12T10:27:45.9166667+00:00
Gérard Oomens 121.7K Reputation points Volunteer Moderator
2 answers

I'm traveling in Brazil and just want to advise all my Sign ins are still legitimate! I've gotten at least a hundred notices of "Suspicious Activity"

I tried to advise I was traveling overseas and the MS Postmaster wouldn't take my msg! Moved from: Microsoft Security | Microsoft Authenticator

Outlook | Web | Outlook on the web for business | Security
asked 2025-12-27T00:01:42.0966667+00:00
rick crawford 0 Reputation points
commented 2025-12-29T03:04:42.2766667+00:00
Anonymous
2 answers

I received an email We detected something unusual about a recent sign-in to the Microsoft account Moderator note: personal info removed

I don't know if this is authentic: I received an email from: Moderator note: personal info ******@accountprotection.microsoft.com We detected something unusual about a recent sign-in to the Microsoft account [Moderator note: personal info…

Outlook | Web | Outlook on the web for business | Security
asked 2025-12-27T00:11:22.27+00:00
Margaret Owen 0 Reputation points
commented 2025-12-28T23:33:20.19+00:00
Sophie N 14,210 Reputation points Microsoft External Staff Moderator
2 answers

Account Verification Required Before Subscribing to Services

Subject: Account Verification Required Before Subscribing to Services Message: Hello, I would like to subscribe to Microsoft services, but before completing the subscription, I need to verify my account. When I try to add my phone number for…

Outlook | Web | Outlook on the web for business | Security
asked 2025-12-18T05:40:28.4633333+00:00
alkhatwah stationary 0 Reputation points
commented 2025-12-19T05:48:10.64+00:00
Darren-Ng 9,635 Reputation points Microsoft External Staff Moderator