After installation, you can simply right-click any "stubborn" file to see the IObit Unlocker option.
Some antivirus programs may flag it as a "Potentially Unwanted Application" (PUA), not because it is malware, but because of its powerful ability to terminate system-level processes. Download iobit unlocker zip
While it is often installed via an .exe , a Portable Version (frequently distributed in .zip format) is available on sites like PortableApps.com . This version doesn't require a full installation and is popular for use on USB drives. Where to Find It not because it is malware