Note: Avid may have deprecated online activation for very old versions. If activation fails, proceed to offline method.

If you genuinely require Media Composer 6-level functionality for legacy projects:

Avid permits the transfer of perpetual licenses between users through an official License Transfer process. You can find legitimate sellers on forums like the Avid Community, Lift Gamma Gain, or Reddit's r/editors. The seller pays a modest transfer fee to Avid, and you receive a clean, legally owned license for Media Composer 6.

Warning: Avoid eBay or Craigslist sellers offering "accounts" or "activation codes only" – those are often stolen or cracked.