LINES IN DRAFT [Outlook 16.111] EMAILS

Question

LINES IN DRAFT [Outlook 16.111] EMAILS

Don TANSWELL 20

I want to get rid of this. I do not have the controls to remove Edit or Grammar check.
This is recent. It has no value to me other than interference. CMD Shift does nothing. Right click offers word replacements that have no relevance or connection, to the selected area.

In 'Support' << Clear all text formatting>> hasno reference to outlook, just Word.

This has nothing to do with LinkedIn.

This is like a disease ....

Don TANSWELL 20 Reputation points

2026-07-22T08:45:53.3+00:00

This has Screenshot 2026-07-22 at 09.40.41.pngnot added my attachments
Hornblower409 12,980 Reputation points

2026-07-24T03:11:16.03+00:00

Similar issue reported at
https://learn.microsoft.com/en-us/answers/questions/5950234/outlook-mac-showing-tons-of-abnormal-editor-underl
Christine 5 Reputation points

2026-07-31T22:07:34.3633333+00:00

I'm experiencing the same thing.

Version 16.111.1 (26071913)
Stefan 5 Reputation points

2026-08-06T08:21:22.1866667+00:00

I have the same problem. Latest outlook (16.111.3), latest macos (26.6), the spellcheck cannot be disabled and it leaves artifacts when text is deleted. Super-annoying.

Here is a screen recording https://www.youtube.com/watch?v=hJya76_8epM

I also tried macos text editor, outlook on the web. They work fine. Problem is isolated to outlook on mac and is clearly a bug in the program. For now outlook is unusable for me.
Hornblower409 12,980 Reputation points

2026-08-12T15:07:49.7933333+00:00

Report from the other thread
https://learn.microsoft.com/en-us/answers/questions/5950234/outlook-mac-showing-tons-of-abnormal-editor-underl

Erving Velez said on Aug 12, 2026

I just updated Outlook to version 16.112 and the issue seems to be fixed now. I have not been able to replicate the red lines issue.

Can anyone here confirm the fix?
Oberdan Nunes 5 Reputation points

2026-08-14T13:17:30.7266667+00:00

Fixed for me too.

2 answers

Your answer

Don TANSWELL 20 Reputation points

2026-07-22T08:45:53.3+00:00

This has Screenshot 2026-07-22 at 09.40.41.pngnot added my attachments
Hornblower409 12,980 Reputation points

2026-07-24T03:11:16.03+00:00

Similar issue reported at
https://learn.microsoft.com/en-us/answers/questions/5950234/outlook-mac-showing-tons-of-abnormal-editor-underl
Christine 5 Reputation points

2026-07-31T22:07:34.3633333+00:00

I'm experiencing the same thing.

Version 16.111.1 (26071913)
Stefan 5 Reputation points

2026-08-06T08:21:22.1866667+00:00

I have the same problem. Latest outlook (16.111.3), latest macos (26.6), the spellcheck cannot be disabled and it leaves artifacts when text is deleted. Super-annoying.

Here is a screen recording https://www.youtube.com/watch?v=hJya76_8epM

I also tried macos text editor, outlook on the web. They work fine. Problem is isolated to outlook on mac and is clearly a bug in the program. For now outlook is unusable for me.
Hornblower409 12,980 Reputation points

2026-08-12T15:07:49.7933333+00:00

Report from the other thread
https://learn.microsoft.com/en-us/answers/questions/5950234/outlook-mac-showing-tons-of-abnormal-editor-underl

Erving Velez said on Aug 12, 2026

I just updated Outlook to version 16.112 and the issue seems to be fixed now. I have not been able to replicate the red lines issue.

Can anyone here confirm the fix?
Oberdan Nunes 5 Reputation points

2026-08-14T13:17:30.7266667+00:00

Fixed for me too.

Answer 1

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Answer 2

Winnie-B 9,930 Microsoft External Staff Moderator

Hi Don TANSWELL

I understand how frustrating it can be when a feature suddenly starts appearing while you're composing emails, especially if it interrupts your workflow.

Based on the information provided, it sounds like Outlook may be displaying Microsoft Editor (spelling/grammar) suggestions while you're composing messages.

Could you please confirm one detail:

Are the lines appearing under words/sentences while you type, or are they horizontal lines/borders within the email body itself?

In the meantime, if these are grammar or spelling markings, please try the following:

Open Outlook and select "Outlook" > "Settings".
Open "Spelling and Grammar" (or "Proofing", depending on the version shown).
Turn off options such as "Check spelling while typing" and "Check grammar with spelling" if available.
Close and reopen Outlook, then create a new message and see whether the markings still appear

Winnie-B 9,930 Reputation points Microsoft External Staff Moderator

2026-07-26T03:36:13.8233333+00:00

Good day Don TANSWELL, I hope you're well. May I know if you've got any chance to check my reply? If you have any further updates on this issue, please feel free to reach back.
Don TANSWELL 20 Reputation points

2026-07-26T09:32:12.2733333+00:00
Hi WInnie - thank you - sorry for my delay.

The issue continues.

Are the lines appearing under words/sentences while you type, or are they horizontal lines/borders within the email body itself?
**YES THEY ARE

IF I CMD X THE WHOLE EMAIL - PASTE - THEY DISAPPEAR BUT RE-APPEAR WITH NEW TYPING**

Open Outlook and select "Outlook" > "Settings".

Open "Spelling and Grammar" (or "Proofing", depending on the version shown).

Turn off options such as "Check spelling while typing" and "Check grammar with spelling" if available. SWITCHED OFF

Close and reopen Outlook, then create a new message and see whether the markings still appear NO CHANGE

I have switched off and re-opened several times
Don TANSWELL 20 Reputation points

2026-07-26T09:43:53.3133333+00:00
Hi WInnie - thank you - sorry for my delay. The issue continues. Are the lines appearing under words/sentences while you type, or are they horizontal lines/borders within the email body itself? YES THEY ARE IF I CMD X THE WHOLE EMAIL - PASTE - THEY DISAPPEAR BUT RE-APPEAR WITH NEW TYPING Open Outlook and select "Outlook" > "Settings".

Open "Spelling and Grammar" (or "Proofing", depending on the version shown).

Turn off options such as "Check spelling while typing" and "Check grammar with spelling" if available. SWITCHED OFF

Close and reopen Outlook, then create a new message and see whether the markings still appear NO CHANGE

**I have switched off and re-opened several times

See below - there should be no grammar check - the three dots have no effect - and the circle has no effect
**
Winnie-B 9,930 Reputation points Microsoft External Staff Moderator

2026-07-27T04:23:29.8666667+00:00
Hi Don TANSWELL

Thanks for your updates.

At this point, rather than repeating the same Outlook settings, I'd like to narrow down whether Outlook or macOS is generating these suggestions:

Open TextEdit on your Mac.

Create a new plain-text document and type a few sentences containing the same phrases that Outlook flags.

Check whether similar red/blue grammar underlines appear there.

If the same markings appear in TextEdit, the source is likely a macOS writing/proofing feature rather than Outlook itself.

If the markings only appear in New Outlook, please confirm:

Which macOS version are you using?

Does the issue occur in all Outlook profiles/mail accounts?

If you compose the same message in Outlook on the web (outlook.live.com), do the markings appear there as well?
Don TANSWELL 20 Reputation points

2026-07-27T13:28:10.56+00:00

Hi Winnie-B!!

I have tried text edit as you recommend - the markings do not seem to be appearing - but spell check does operate

Yes - I am using new Outlook but this is a recent issue.

Which macOS version are you using? Sequoia 15.7.7

Does the issue occur in all Outlook profiles/mail accounts? Yes

If you compose the same message in Outlook on the web (outlook.live.com), do the markings appear there as well?
Yes different markings do appear - attached

Thank you, Don
Don TANSWELL 20 Reputation points

2026-07-27T13:45:36.1766667+00:00
Hi WInnie - thank you - sorry for my delay.

The issue continues.

Are the lines appearing under words/sentences while you type, or are they horizontal lines/borders within the email body itself?
**YES THEY ARE

IF I CMD X THE WHOLE EMAIL - PASTE - THEY DISAPPEAR BUT RE-APPEAR WITH NEW TYPING**

Open Outlook and select "Outlook" > "Settings".

Open "Spelling and Grammar" (or "Proofing", depending on the version shown).

Turn off options such as "Check spelling while typing" and "Check grammar with spelling" if available. SWITCHED OFF

Close and reopen Outlook, then create a new message and see whether the markings still appear NO CHANGE

I have switched off and re-opened several times
Don TANSWELL 20 Reputation points

2026-07-27T14:00:25.0166667+00:00
Winnie thank you!

Text edit does feature spell check but no other strange markings

This does not happen on OOT Web.

It still happens on OF Mac.

Which macOS version are you using? SEQUOIA 15.7.7

Does the issue occur in all Outlook profiles/mail accounts? YES

If you compose the same message in Outlook on the web (outlook.live.com), do the markings appear there as well?
Don TANSWELL 20 Reputation points

2026-07-31T14:03:02.41+00:00
Winnie thank you! Text edit does feature spell check but no other strange markings This does not happen on OOT Web. It still happens on OF Mac. Which macOS version are you using? SEQUOIA 15.7.7

Does the issue occur in all Outlook profiles/mail accounts? YES

If you compose the same message in Outlook on the web (outlook.live.com), do the markings appear there as well?
Winnie-B 9,930 Reputation points Microsoft External Staff Moderator

2026-08-03T00:40:06.7633333+00:00
Hi Don TANSWELL

Thank you for the additional testing. That information is very helpful.

As a further test, could you please check whether Microsoft Editor is enabled within Outlook:

Open a new email message.

On the menu bar, select "Edit" > "Editor" (if available in your build).

If you see Microsoft Editor or writing assistance options enabled, temporarily disable them and test a new message.

Also, please confirm whether the problem began shortly after updating to Outlook 16.111 or after a recent Office update.

In the meantime, your workaround of cutting and pasting the content appears to clear the markings temporarily, although I appreciate that this is not a practical long-term solution.