Bumping this, as I have had no response: ======= Hi, anyone run into this issue on Lucee 6, whilest trying to upload a file to our server via MASA CMS on Windows 2022 Server via the browser?

Message: "Could not initialize class sun.nio.fs.WindowsSecurity"

Type: "java.lang.NoClassDefFoundError"

prob you migrated off JDK 8 ? I think the class is now replaced with something else

After some more brainstorming with our IT-guys I tried something WILD - setting FULL CONTROL on the Windows system account Lucee runs under - and hey, now uploading works! Presumably all other security settings but Full Control on the /Lucee folder (where the webcontexts run) are inadequate for file uploading and file moving / copying. We now finally have a fully working MASA CMS running multiple sites on the latest stable build of Lucee 6! :-)

Security wise it's not probably good ? I not sure of the setup. Lucee will try to upload to temp folder under its root, but probably folder can be moved outside and then give read/write permissions, so Lucee folder remains restricted.