If you are looking for free ways to clean your PC or recover an existing key, here are the official methods: Recovering a Lost Key
If you want a dedicated cleaning tool, consider these highly-rated free and open-source options: BleachBit:
: Full automatic repairs, startup manager, registry cleaning, and PUP/malware detection. Subscriptions typically start around when billed annually. PC HelpSoft Risks of "Free License Key" Websites
While there are no guaranteed ways to get a free license key, here are a few options to consider:
: PC HelpSoft provides a free version of PC Cleaner that allows you to scan your system and identify junk files. However, automatic cleaning and optimization usually require a paid license.