Access Denied - Windows 10

When I double click on the MYCLOUDEX2ULTRA folder inside windows network folder, I get this Security windows

asking for user name and password. After I enter WD user name and password I get this error message

Please help me figure out the issue and how to fix this.
Thank you.

Hi there baptize,

There could be multiple reasons for this error. Please check the permissions of the share that you are trying to access.Please refer to the link below for isolating this issue.
https://support.wdc.com/knowledgebase/answer.aspx?ID=15171&s=