The "Extended Validity Period" feature allows users to purchase a license for Avira Antivirus Pro that remains active until December 31, 2099. This feature provides users with long-term protection against various cyber threats without the need for frequent renewals.
Cons
Avira Antivirus Pro: Overview
: Once Avira's servers detect the same key being used by thousands of people, it is usually blacklisted, causing the software to stop updating or functioning. Risks of Using Illegitimate Keys avira antivirus pro license key till 2099