This problem for me for a long time, also did not succeed, finally found: because installed WPS, domestic file associated with it, note: must first open the WPS, set to cancel all associated (not in set in system setup office files directly associated with the default application) cancel the associated, problem solved, you can give it a try, this bottom interface and relaxed, think help remember little praise, write a praise oh set as the best answer! A S well, advertisements do not say,,,
If you don't want to use the WPS, cancel all related to restart again uninstall first, should be able to solve the problem (ps this not try)
Are the problems of one S

1. In one S cancel file associations, click a S the top left corner and repair tools -> advanced -> Settings -> configuration, the abolition of all the options in the red areas,


2. Then click ok to save the changes,

3. The start -> control panel -> programs -> default program to set the default program, click on the EXCEL 2016 - select the default value of this program - selection, and then save,


4. OK, problem solving,