Anti virus and anti-malware programs are installed in the computer to secure the computer from malware and viruses . After installation, these software need to update themselves, because without regular update of the virus detection file, security will be compromised. Antivirus programs update automatically from the internet but even without an internet connection, they can be updated. For this, the updated antivirus file needs to be downloaded from the internet and via an external storage devices like a USB stick, an external hard drive, a CD / DVD, the update can be transferred to a PC with no internet connection. The update method of antivirus software varies according to the brand - hence knowledge of the procedures can be useful.
Updating your antivirus/anti-malware without internet connection
Antivirus and antispyware are reliable only if they are updated regularly. Note that most of current anti-virus software updates automatically via the Internet.
This can be problematic for users with no internet connection.
You should use a computer with an internet connection to download the appropriate updates and transfer them to the target computer using a USBstick, external hard drive or CD.
Here's how to do this with the most common antivirus software.
Save the file to your desktop or My Documents folder to find easily
Once the download is complete, double click the downloaded executable (or transfer it to the computer without a connection) and follow the wizard. After all the procedures are completed, you will see in the Malwarebytes Anti-malware interface that the software has been updated