|Often when you are blocked from MS and AV's it means you have some sort of virus onboard. For the time being run your AV scans (if it lets you). |
You can also download MawareBytes freebie which often finds things AV's miss. If needbe download it on another computer and transfer it to this one using a flash drive. Note also that if it's exe doesn't run just change it to either cmd or bat instead. This applies to both the download and the actual program exe. It is a deliberate feature in case exe files are blocked by a virus.
Always pop back and let us know the outcome - thanks