Please remember to mark the replies as answers if they helped. It's reported that it will be better in a 32-bit version of Outlook 2016.

I noted that you are using a 64-bit version of Outlook 2016, you may also consider to change to a 32-bit version. Disable the option 'Reduce message size by removing format information not necessary to display the message' under File > Options > Mail > Message format.Ĥ. To find it, go to File > Options > Mail > Message Format heading.ģ. Disabling 'Use cascading style sheet (CSS) for appearance of Messages' option. To do this, double click to open the HTML message, under Message tab, click Actions > View in Browser.Ģ. Open the affected email message in browser when reading as you have done. Microsoft does not guarantee the accuracy of this information.)Ĭurrently, you can try some temporary workarounds here:ġ. (Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. However, this may cause some rendering issues. In this way, we have better control over the active content the rendering engine can display, while if using Internet Explorer to render HTML, it would display everything and could run virus infectedĮmail automatically. We dropped IE as the rendering engine for security reasons. Since Outlook 2007, Outlook uses Word or a Word-based engine to render HTML emails instead of using Internet Explorer in earlier See whether you can see the missing portion now.īesides, if these emails are HTML coded, such as some newsletters emails, it could also be a HTML rendering issue in Outlook. Then, under Format Text tab, select Plain Text in the Format To do this, open one of the affected emails, under Message tab, click Actions > Edit Message. We may first try to change the email format to Plain Text and then see whether this issue continues.

Is there any pattern on these affected emails? Are these emails HTML coded?

When this issue happens on an email message, does it happen with all recipients of the email message?

Outlook 2016 preview pane blank