Hi everybody, I have no idea why my office( 2010 professional plus) cannot open files(I mean all type: doc,docx,ppt,pptx,xls,xlsx ...) downloaded via browser. By default, all files downloaded via browser are saved in C:\Users\myname\Downloads, and I cannot open these files. But everything will be fine if I upload these files then download by IDM. I need your help. Thanks for reading.