Frequently Asked Questions about the use overall FAQ
A. There seems to be the case that the AdobeReader wasn't installed in the initial setting in Windows10.
Please check and if it isn't installed, please download from the following link.
If it's installed, please change your IE setting as follows to try again.
Tool in the Internet Explore→Administration of add-on→Display has to be chosen "all add-on"→Invalid the "AdobePDF Reader" in the name column.