How do I get the Windows 8.1 operating system to change the DPI to increase the font for the entire Windows Live Mail?  Your answer was not directed to the Windows Live Mail issue.

Two threads on the same topic merged and duplicate post deleted 

Windows Live Mail Issue when attempting to launch program...

"Windows Live Mail could not be started. It may not be installed correctly. Make sure that your disk is not full or that you are not out of memory. (0x80041161)"

Circumvention of the issue would be helpful...no other application issues exist on this PC and there is plenty of disk and memory....thanks in advance!