rcp.paulson wrote: > it can work directly on the ext system hive binary to decypt the keys No, by itself it [ProduKey] can't read binary windows registry files. It still uses system to do that: Code: 0009:Call advapi32.RegLoadKeyA(80000002,0040c7f8 "$$PRODUCKEY_TEMP_HIVE$$",0014af5c "software") ret=0040327b 0009:Ret advapi32.RegLoadKeyA() retval=00000522 ret=0040327b And you've been told that it won't work on Wine.