If you are looking for a professional-grade experience without the price tag or the risk of searching for "activation keys," consider these industry-standard free tools:
The man reached into his pocket and slid a plain, unmarked CD case across the counter. The plastic was cracked, held together by a piece of scotch tape yellowed with age. Windows Movie Maker 9.9.5.0 Activation Key
Windows Movie Maker 9.9.5.0 is not an official Microsoft release. The original Windows Movie Maker was part of the Windows Essentials suite and was officially discontinued in 2017. If you are looking for a professional-grade experience