Microsoft Office 2016 Error "We're sorry something went wrong ... 0x8004FC12"

A solution search reveals lots of unhelpful websites with garbage answers. Here's the solution that worked for me. Enter the following in a Command prompt (DOS box) which has Administrator privleges. See Office 365 Activation Fix for more info. Can someone explain why these steps have become necessary?

  net localgroup Administrators localservice /add
  fsutil resource setautoreset true C:\
  netsh int ip reset resetlog.txt      (might be optional command)

Apparently this happens when the Microsoft Office Click-to-Run Service become disabled. In my case I completely disabled it instead of setting it to manual start some time before the error occurred, and forgot that I did it. THIS page has some additional useful information and solutions for related errors.

Solution-1

Find the windows service application and run it. Then look for the Click-to-Run entry and make sure it is set to start. Then start it manually and try starting word (or excel etc) again.

Alternatively, if you're a command line junkie, you can accomplish the same through the Admin CMD window or Power Shell:

sc config clicktorunsvc start=auto
sc start clicktorunsvc

For other error and more details, see the link I provided.