If you tell me what happens when you try to open it, I can tell you exactly how to fix it.
(e.g., getting an error message)?
Depending on where you downloaded it from, it likely contains a collection of files (images, documents, etc.) rather than a single file. How to Open LBC1.7z LBC1.7z
Use file manager apps like RAR or ZArchiver to extract the contents. Troubleshooting & Tips If you tell me what happens when you
(or what do you expect to be inside)?