Formatting Issues

How to Fix a Missing Bottom Border on Images in Outlook Tasks

Amos Gikunda Oct 9, 2026 868 views

Question details

Users need to restore the visibility of the bottom border on images pasted into classic Outlook tasks, which often appears missing or too faint.

How to Fix a Missing Bottom Border on Images in Outlook Tasks

Product: Microsoft Outlook
Device & OS: not provided
Scenario: Pasting bordered images into a classic Outlook task.
Observed behavior: The image shows borders on only three sides, with the bottom border being entirely missing or too narrow to see.

Before you start

Verify that the original image actually has a complete, four-sided border applied before pasting it into your Outlook task.

Solution 1Recommended

Increase the Image Border Line Width

Adjusting the thickness of the picture border forces the email client to render the missing bottom edge properly.

In classic Outlook, rendering engines can sometimes clip or obscure the bottom edge of an inline image, especially if the border is very thin. Increasing the line weight compensates for this visual clipping.

Select the Image

Click on the affected image inside the body of your Outlook task to highlight it.

Open Picture Formatting

Navigate to the 'Picture Format' tab that appears on the top ribbon menu once the image is selected.

Adjust Border Weight

Click on 'Picture Border', hover over 'Weight', and select a thicker line setting. Changing it to 1.75 pt or 3.25 pt will usually make the bottom border visible and match the other sides.

Visual Balance: A weight of 3.25 pt is often the most effective for keeping all four sides looking uniform in classic Outlook.

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Frequently Asked Questions

Why does only the bottom border disappear on my pasted images?

In classic Outlook, the text rendering engine can sometimes clip the bottom boundary of inline images, especially when the line is extremely thin. The image isn't broken; it's simply a rendering limitation within the task editor.

Does this missing border issue happen with every image?

No. The issue varies from image to image depending on the picture's original resolution, file format, and how Outlook scales it to fit within the text bounds of the task.

Is there a specific line weight that guarantees the border will show?

A minimum border weight of 1.75 pt is generally enough to force the bottom border to appear. However, setting the weight to 3.25 pt is highly recommended to ensure it matches the visual thickness of the other three sides.

Document & File Issues