All of a Sudden receiving Error downloading MS files on Outlook online via Chrome

[lindsayS_TR]

Hi,

I work for a large corporation and have been using MS online apps to conduct business for over a year and a half on a Chrome browser. 

All of a sudden, about three weeks ago, I am getting an error message when I try to download any MS file (Word, PPT, Excel), even from internal employees. I can download .jpgs just fine. I tried downloading on Microsoft Edge and it's working fine, so it appears to be an issue with Chrome specifically and Microsoft Cloud Security. 

This is the error:

I have tried working with IT to find a solution but to no avail. 

Can anyone help?

[#2]

This is caused by a session policy your administrators have implemented to block downloads. You must work with your IT administrators to determine appropriate action.