Cannot resize non system partition

I have 3 drives, one has Windows, one Linux and one that is large and contains two partitions, one is ntfs (which is on the left) and the other is ext4.

When I boot into Windows, for some odd reason I can no longer resize the ntfs partition. When I go to disk management on Windows and I select the partition and right click and shrink, it does show how much I want to shrink and when I change it to any value it doesn't show what my new value would be or I can proceed to the next stage.

I have ran disk repair and it has repaired it but still the same issue. Do I need to defrag the entire partition to fix this?