Uninstall Bitdefender completely using their uninstall tool (not Windows Add/Remove). Then sign up for a new trial with a different email. Works once or twice before hardware block.
Now re-download Bitdefender Total Security. When prompted for an account, use a brand new email address (e.g., yourname+reset1@gmail.com). Do not use your old email. bitdefender total security trial reset
Result: You have a 30-day trial. However, this process takes about 45 minutes and requires high technical comfort. Now re-download Bitdefender Total Security
Note: This study treats the topic academically. Resetting a commercial trial to keep using paid software without purchase typically violates terms of service and may be illegal in some jurisdictions; it can also expose systems to security and privacy risks. The following is an analytical, research-style treatment—do not use it to circumvent licensing. Result: You have a 30-day trial