Set file read only by some users is not working

HI, I had set a folder lets say the folder named " documents" to " USER A" as read only access and User B as full access.

So I try to put in some files to test if the permission I set is working properly or not.

In that case ,I log-in as " USER B" and put a microsoft word file into “documents” folder.
Then I log into user A to test if user A can edit it not. Somehow, user A was able to edit and can change the file as well.

Could someone help me with this issue?


Make sure to check the permissions again to ensure the proper settings.

The following article explains how to create users and assign permissions.

How to create and delete a User account on a WD My Cloud, Mirror, EX2, and EX4 Personal Cloud drives