Hello everyone. I contacted Outlook about the issue and received the following answer:/
Outlook Support
October 14, 2017, 11:05 +0000
Hi Hamad,
We thank you for your patience and apologize for the ordeal you are currently going through. Your case is escalated to Research Team and my name is Uttam and we will be glad to assist you on this further. From the issue description, I understand when you access
Outlook.com from Safari, 'Silent DMS' file gets downloaded automatically.
"Silent DMS" is the file which generated from the Apple device. I suggest you to make sure that your apple device is up to date. Once you have updated the apple device, then try accessing
https://outlook.live.com/owa/?authRedirect=true through different browser and device and check if 'Silent DMS' file gets downloaded again. If the issue persists then, I suggest you to install the EasyFind app from the apple store , which will help to find the all files which are related to silent.dms and delete them all.
Please follow the steps mentioned below;
1. Download EasyFind from Apple store. It's small, free, and easy to use
2. Open EasyFind app from Launchpad.
3. In preferences, set normally-invisible files to be VISIBLE
4. In the search box, enter "silent.dms"
5. On the right, make sure your entire drive is selected to be the searched drive
6. Let EasyFind reveal all the silent.dms files
7. Delete them.
8. In the finder, empty the trash.
9. Done.
Looking forward your reply.
Regards,
Outlook.com Research Team