Nod32 not updating from mirror
The easiest way I've been able to fix these is, to resend the client configuration. - Clearing update cache did not help - Server address and port has not changed 10 out of 80 PC's did this.
Run the executable upon getting it to update Antivirus, Spyware, Spam, Parental control definitions.
In version 6 ESET business products, the role of the mirror server is replaced by Apache HTTP Proxy.
You can still configure a mirror server on a client computer if you prefer.
Make sure to click on the correct link to download the 32-bit or 64-bit version that matches the Windows you want to install it on.
Download Windows Defender Definition File Sophos virus identity (IDE) files The Sophos definition files are compatible with versions of Sophos Antivirus not older than 3 months, and can be downloaded as either Zip or self extracting executable.