I just found that Windows Update is failing and hasn't installed any updates for a little more than a month.

It says:

```
Windows could not search for new updates
There was a problem searching for updates
Errors found: Code 80244019

```

This article at Microsoft suggests it might be a virus: [Windows Update error 80070422, 80244019, or 8DDD0018](http://windows.microsoft.com/en-us/windows-vista/windows-update-error-80070422-80244019-or-8ddd0018)

The operating system is Windows 8.1 Pro with Media Center.