What is an OCX file?
The .OCX file extension stands for Object Linking and Embedding Control Extension. Most often, this file is an ActiveX Control created for the Microsoft Windows operating system. These files are typically based on the EXE or DLL format. Programs use them to add extra functions to the system, such as custom user interfaces.
Sometimes, the .OCX extension has a different meaning. For example, some ransomware programs hide an encrypted Microsoft Word document inside a ZIP archive and rename the file to .OCX. Because .OCX has multiple possible meanings, we recommend using viewer.online/ocx to identify the actual format of your specific file.
How to open OCX files?
Normally, you do not open .OCX files manually. Software programs load them automatically when they need to run a specific task. To install an ActiveX Control in Windows, system administrators use the Regsvr32 command-line tool. viewer.online/ocx analyzes .OCX files to identify their exact format and creator software, shows which programs can open the file, and usually previews it.
Best practices and troubleshooting
Because an .OCX file can be a powerful executable component or a disguised archive, you must be careful. Never register or run an .OCX file from an unknown source. If a program displays an error about a missing component, download the official software package from the developer to restore it safely.
Summary
Because .OCX files use the known EXE format, viewer.online/ocx can safely open and display them online, eliminating compatibility problems.