Updates in Windows 10 computers are known for installing automatically and now there’s a type of infection that will try to encrypt your files while showing a fake Windows Update screen like this:

The percentage counter does work (goes up) but is nonetheless fake.

Even though an effective antivirus solution should detect this type of infection, the best defense against this type of infection is to have a good backup plan, in case your files are indeed encrypted and need to be restored from a backup.

It cannot be overstated how key it is to have a good backup plan in place as the best defense against these types of infections.