The latest/last version of SFP-10 was build 507 and is available from the Magix Service Center> My Products or the Download Center as @SP. stated. Build 507 and earlier are also avaible from the (Wayback) SCS archives which does not require a log-in. I do not know about SF-10's compatibility with Win 11. SFP-10 functions normally in Win 10.. though on some PCs, an 'Elevated Privilege' issue can cause SF-10 not to open after (some) Win 10 updates. That can be addressed with a registry tweak or enabling 'Run as Administrator'. btw, welcome to the Magix Sound Forge users community @I-Semple.