I don't know if you're aware of it, those you think are normal application software, the same location shows the disk space footprint of the software. This is not available, which means that the system cannot detect the exact disk space footprint of the software. In general, because of the software installation package registration information is incomplete, the installation path information is not complete, or the software version of the old, or the software installation package does not support the system to query its disk capacity occupancy, installed on the system, here will be shown as unavailable.
So encountered WIN10 system applications and functions of some software display is not available, we do not have to panic, this is only the software system can not obtain its accurate occupation of space, and will not give the software itself to run cause problems.