Opener-rar.dll file is part of opener-rar product developed by opener-rar. It is responsible for functionality. This part is required for opener-rar to function. If you are planning on replacing opener-rar.dll with a new version make sure that you backup your old file. Replacing opener-rar.dll file with a diffent version can cause opener-rar to malfunction.
|Dll file name
|Program Files WindowsApps