Most of the functionality once unique to KnockOut 2 is now built directly into Photoshop or available through modern, supported 64-bit plug-ins: Corel Knockout 2 V2 77 64bitsbfdcm - Facebook

Protect your system and your wallet — avoid pirated plug-ins.

For professionals and businesses relying heavily on image editing for their work, investing in a licensed copy of Corel Knockout 2 is advisable. Not only does it ensure access to customer support and updates, but it also supports the continued development of innovative tools and technologies that benefit the creative community.

Software like jBridge or 32-bit Bridge can sometimes wrap 32-bit plugins to run in 64-bit environments, though results are often buggy.