For me downloading the silk workbench (.tgz) from this link: https://github.com/silk-framework/silk/releases/tag/release-2.7.1

then extracting the .tgz file and copying it to the C drive, try to copy the sub-folder and final link should be like this: C:/silk-workbench-2.7.1/bin/

then run cmd as an administrator and and go to this address: C:/silk-workbench-2.7.1/bin/

write the silk-workbench.bat and enter.

you will find application running on the localhost address: http://localhost:9000/

@Reihan_amn for your helpful comment