This is due to the change of underlying file upload mechanism to OWA by Microsoft.Fix will come in future version/patch of HDLP, date of this fix is not known as of now. Before the fix, we demonstrate the workaround of using HDLP Application File Access Protection Rule (AFAPR), during the remote, to block web-post of file to outlook/Hotmail site.
Hello I Have the same problem while uploading to hotmail or gmail on IE 11.5
Microsoft Edge and FIrefox is working fine and blocking uploading to gmail.
I am using DLP version 10.0.100 with mcafee agent 5.04.