|Go to this website and download the EXE fix.|
It has to be unzipped then you double click the reg file to run it. If you can't get online then download and unzip it on another computer, then transfer the reg file to yours via a flash drive.
If you get the immediate problem fixed then run your AV scans because this is often the symptom of a virus. Also download MalwareBytes free version. Install and run that too because it often unearths what AV's miss.
Always pop back and let us know the outcome - thanks