Large Outlook 2016 Message Header Text After Last Update

After the last Office and Windows update, the Outlook 2016 message headers have turned in to very large text on all accounts. Has anyone else noticed this?

Actually yes but I saw this on a client's machine five months ago.

Now what I saw was the sender name, time and the email title in thick black font.

It didn't bother him so it didn't bother me.

He uses Yahoo as his email provider.


I use Office 365 with an outlook.com account and two other accounts on my server. I do not see such behaviour.

Caledon Ken said:

Actually yes but I saw this on a client's machine five months ago.

Now what I saw was the sender name, time and the email title in thick black font.

It didn't bother him so it didn't bother me.

He uses Yahoo as his email provider.


I use Office 365 with an outlook.com account and two other accounts on my server. I do not see such behaviour.

I have the issue on two PCs after the latest Office 2016 update - now on Outlook 2016 v12730.20270. It's the text size of the message title etc in the inboxes which is the problem. It's probably a bug which I'll report. I've had to set the fonts to small as shown:
Attachment 278801

I included that my client was using Yahoo and I know Verizon has been making many changes.

Any chance you are using one of their domains, something Yahoo or AOL

Caledon Ken said:

I included that my client was using Yahoo and I know Verizon has been making many changes.

Any chance you are using one of their domains, something Yahoo or AOL

The problem is the same across all accounts including GMail, outlook.com and other mail providers. I have one PC still using Outlook 2010 which is fine.

Wonder what it is with 2016? My client is 2016. Thanks for the info on domains, I was wondering if Yahoo specific. Guess not.