Outlook.com Not Saving Blocked/Safe Sender Changes

Question

Outlook.com Not Saving Blocked/Safe Sender Changes

Roberto 10

I'm trying to receive a T-Mobile verification email for setting up my T-Mobile ID. I found a legitimate T-Mobile email in my Junk folder, so I know T-Mobile is sending emails to my Hotmail account.

The problem is that email is listed under Blocked senders and domains. When I try to remove it, Outlook says "Something went wrong. Please try again later" and the change does not save.

I also tried adding the email under Safe senders and domains, but I get the same "Something went wrong. Please try again later" message and it won't save.

How can I fix Outlook.com so that I can remove the T-Mobile domain from my blocked senders and/or add it to Safe Senders? Is there another way to reset or modify these settings when Outlook won't save the changes?

Hornblower409 14,595 Reputation points

2026-09-03T07:00:53.6133333+00:00

@Roberto said

"Something went wrong. Please try again later" and the change does not save.

If you would please, perform some quick test to help narrow down where the problem might be:

Try adding a completely innocuous email to your Safe Sender's List. e.g. someone@example.com

Try deleting another blocked sender besides the T-Mobile one.
Ben 0 Reputation points

2026-09-08T08:51:31.6666667+00:00

I have the same issue also, experienced on 7th+8th Sep 2026. I'm trying to remove an email address from my blocked senders list. I get the same message - something went wrong, please try again later.

Been on phone with a Micorsoft support agent - told me it's a server issue and it's known. Exhausted with him all troubleshooting, and problem persists.

Also just tried moving an email that came into junk to inbox, and had a message I've never had before - couldn't add the address to safe senders list.

4 answers

Your answer

Hornblower409 14,595 Reputation points

2026-09-03T07:00:53.6133333+00:00

@Roberto said

"Something went wrong. Please try again later" and the change does not save.

If you would please, perform some quick test to help narrow down where the problem might be:

Try adding a completely innocuous email to your Safe Sender's List. e.g. someone@example.com

Try deleting another blocked sender besides the T-Mobile one.
Ben 0 Reputation points

2026-09-08T08:51:31.6666667+00:00

I have the same issue also, experienced on 7th+8th Sep 2026. I'm trying to remove an email address from my blocked senders list. I get the same message - something went wrong, please try again later.

Been on phone with a Micorsoft support agent - told me it's a server issue and it's known. Exhausted with him all troubleshooting, and problem persists.

Also just tried moving an email that came into junk to inbox, and had a message I've never had before - couldn't add the address to safe senders list.

Answer 1

Antti Laatikainen 0

Hi! I have the same issue (on Windows 11/Firefox or Edge), and while checking the responses that the server is giving back when I try to do any modifications to safe senders / blocked senders lists, is always:

"WasSuccessful": false,

"ErrorCode": 2,

"ErrorMessage": "Property validation problem: IsMailboxOwnersEmailAddress.",

"UserPrompt": null,

"IsUserError": false

No matter if I try to remove a line, add new address to the list or modify existing ones.

This has ben the case for some weeks now. To me this sounds like a backend issue? :)

Anyone from Microsoft on this thread?

Hornblower409 14,595 Reputation points

2026-09-04T08:23:46.18+00:00
@Antti Laatikainen said

I have the same issue

Multiple recent reports. e.g.

https://learn.microsoft.com/en-us/answers/questions/5993215/how-to-fix-not-saving-settings-in-undoing-block-se

https://learn.microsoft.com/en-us/answers/questions/5989552/couldnt-save-changes-when-unblocking-an-email

Anyone from Microsoft on this thread?

No one from Microsoft Support monitors this forum directly. If you want to try Chat Support:

Open a browser to https://support.microsoft.com/en-us/home/contact

Tell us your problem: {Whatever}

[Get Help] {Scroll down to the bottom of the page} [Sign in to Contact Support]

Sign in with any Microsoft account

Products and services: "Other Products"

Category: "Manage Account Security"

[Confirm]

Choose a support option -> "Chat with a support agent in your web browser"

Answer 2

Hornblower409 14,595

@Ben said

trying to remove an email address from my blocked senders list ... something went wrong, please try again later.

If you only need to get an email off your Blocked list, or add to Safe, but can't save changes:

Possible Workaround - Add to Contacts. See the Answer by "Hornblower409 Sep 5 2026" in
https://learn.microsoft.com/en-us/answers/questions/5989552/couldnt-save-changes-when-unblocking-an-email

0 comments

Answer 3

@Roberto said

How can I fix Outlook.com so that I can remove the T-Mobile domain from my blocked senders and/or add it to Safe Senders?

At the moment there appears to be a problem with the Microsoft server software that is preventing you from making changes to the Safe/Blocked list.

See: https://learn.microsoft.com/en-us/answers/questions/5988478/cannot-save-changes-to-junk-email-safe-or-blocked

Is there another way to reset or modify these settings when Outlook won't save the changes?

Possible Workaround - Add to Contacts

See the Answer by "Hornblower409 Sep 5 2026" in
https://learn.microsoft.com/en-us/answers/questions/5989552/couldnt-save-changes-when-unblocking-an-email

Answer 4

Hi @Roberto ,

If you have not already been accessing outlook.com via a web browser, my first suggestion would be to try to add the sender to your safe senders list there.

If not, I might ask another question if you have your Outlook mail account tied to a mobile device?

I have seen in previous cases that the phone's mail app might have the email address marked as junk or blocked so Outlook will comply with the settings of the phone after the email arrives in the mailbox. Some mail apps will perform a "sweep" of rules that you have set to keep your mailbox clean based of your phone mail app settings.

Keep up posted on your findings and any other questions you may have!