OCX File Extension
ActiveX Control
- File Type ocx
- Developer Microsoft
- Popularity
- Application Microsoft Visual Basic
- Category Dangerous Files, System Files
- Format Binary
What is a OCX file?
The OCX extension is used by ActiveX Control and falls under the categories of Dangerous Files and System Files, covering 337 files.
Microsoft, the developer of the ActiveX Control (OCX), has released file format and 242 programs designed to handle them.
OCX files are compatible with various operating systems, including Windows, Mac OS and Linux. There are 4 programs available to open a OCX file, including popular tools like Microsoft Visual Studio, Microsoft Visual Basic and RAD Studio.
File Signature
HEX code: 4D 5A. ASCII code: MZ.
Programs that support OCX files
How to open a OCX file?
If you are having trouble opening a OCX file, it usually means the right software is not installed. Choose a program from the list that matches your operating system. Next, visit the official website of the developer, download the software, and install it on your device.
Microsoft Visual Studio, Microsoft Visual Basic and RAD Studio are recognized as the most popular software solutions for dealing with OCX files. If you wish to install the latest release of Microsoft Visual Basic, visit the official Microsoft portal and download the edition that works on any operating system.
Once Microsoft Visual Basic is installed, the OS should configure it as the default tool for opening OCX files.
Set Microsoft Visual Basic as the default OCX handler
Setting a default program by file type in Windows
- Right-click on your OCX file and choose the "Open With" option. Then click "Choose another app" to continue the process;
- In the pop-up window, find and select the Microsoft Visual Basic application from the available options;
- Make sure the "Always use this app" checkbox is checked and click "OK" to confirm your choice as the default app for opening OCX files.
Choose an app to open a file on Mac
- Right click or use Control + left click on the desired OCX file to launch the file options menu;
- Select "Open in application" and click "Other";
- Towards the bottom of the window, find the "Enable" menu, which is already set to the default option, "Recommended Programs";
- In this menu, select "All Programs" and search for Microsoft Visual Basic. Check the box next to "Always open in app" to make it the default option.
How to edit a OCX file?
Editing OCX files requires installing professional software that lets you open and edit dangerous files. Online editors have more limitations compared to dedicated ActiveX Control programs.
List of Top OCX editors 2026
According to these factors, we have compiled a list of available OCX editors.
| OCX Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| Microsoft Visual Basic | Microsoft | Windows | 4.3 out of 5 (39 reviews) |
| Microsoft Visual Studio | Microsoft | Windows, Mac OS, Linux | 4.2 out of 5 (35 reviews) |
Effective solutions for OCX file problems
If OCX files are giving you trouble, small modifications to your software can help. Check out the troubleshooting tips below to fix these issues.
What are the possible solutions to recover a corrupt OCX file?
Start a data recovery program and open the damaged OCX file. Go to the menu and select the "Repair" option to repair the file. Allow the recovery process to complete, which will automatically repair the damaged dangerous files.
Are there any symptoms that my OCX file is damaged?
Corrupted OCX dangerous files may show the following signs:
- Opening the file in Microsoft Visual Basic or other programs causes them to hang or crash;
- Error dialogs are displayed when interacting with the file;
- Opening the file results in an error or a failed attempt;
- Unexpected expansion of the total size of the OCX file;
- Editing the archive in Microsoft Visual Studio is accompanied by slow performance or delays;
What are the possible causes of Microsoft Visual Basic crashing?
The absence of software updates can cause Microsoft Visual Basic to crash. It is recommended to install the latest available updates for Microsoft products.
Restarting your computer can resolve numerous common problems, so it should be the initial step before changing any software-related settings.