The "2050" claim is a marketing tactic to lure users; legitimate licenses are never valid for that duration.
For legitimate security, you should download Avast Antivirus directly from the official website to ensure the software is secure and authentic. arquivo-de-licenca-do-avast-premier-2018-crack-ate-2050
Users search for a license file (often a .avastlic file) intended to trick Avast Premier 2018 into believing it is activated until 2050. The "2050" claim is a marketing tactic to
Here is the "proper story" regarding this specific type of request: users often get keyloggers (stealing passwords)
Instead of protection, users often get keyloggers (stealing passwords), ransomware (locking files for payment), or cryptojackers (using your CPU to mine cryptocurrency), often rendering the computer slow or unusable.