- Enable Active X
A. Open Excel > File > Options > Trust Center > Trust Center Settings > Active X Settings > Select Enable all controls..
B . Look into the answer given in the thread
https://community.spiceworks.com/topic/1541228-...
- If above doesn't work, perform Online Repair
How to repair instructions -
https://support.office.com/en-us/article/Repair...
- Look into Answer in below thread (Use 16 in place of 14 in the paths given in the below Answer)