SSRS chart does not show all labels on Horizontal axis

Solution 1:

The problem here is that if there are too many data bars the labels will not show.

To fix this, under the "Chart Axis" properties set the Interval value to "=1". Then all the labels will be shown.

Solution 2:

Go to Horizontal axis properties,choose 'Category' in AXIS type,choose "Disabled" in SIDE Margin option