Some .ocx files display errors due to not being registered. Because of that, Microsoft has outlined specific steps for how to register .ocx files. Even if the file is correctly registered, some users may experience errors, specifically with the mciwndx.ocx file. It may be a variety of reasons that cause the error, and a number of possible solutions exist as well.

mciwndx.ocxFilename: Mciwndx.ocx
Developer: Microsoft (support)
Operating systems: Windows
Rating: 4 stars based on 27 votes
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Possible causes of Mciwndx.ocx errors

These errors are frequently caused by conflicts with the file or installation profile, misuse of the file or respective directories, or a malicious attack on the system.

  • When conflicts arise on the profile or with the file, the application may be unable to transmit data between the necessary files.
  • When a file or directory is misused or damaged, the application as a whole may be unable to load.
  • Malicious attacks or infections on the system may render the entire system frozen or unable to perform any necessary computing functions.
Regardless of the cause, determining the best solution should be the first action step when noticing any system-related computer errors.

Is Mciwndx.ocx a dangerous file (virus, malware, spyware)?

In most cases, the file is considered to be safe. However, files do become corrupt at times and some malicious files are disguised to represent known, secure system files. When that happens, they can be very difficult to detect and remove, but using a comprehensive system scan usually detects them and allows you to safely remove them.

Known Mciwndx.ocx error messages

Mciwndx.ocx error

Common error messages users may see include:

  • File not found: Mciwndx.ocx
  • Cannot find file: Mciwndx.ocx
  • Device not recognized missing Mciwndx.ocx file
As the file is associated with USB connections to the computer, a keyboard, mouse, or other piece of hardware connected to the machine through a USB cable may be causing the error or may be unable to function properly due to the error.

Should I stop the Mciwndx.ocx task or process within the Task Manager?

Unless you have experience managing the processes and tasks on your machine, it is best to allow a system scanner or registry scanner to handle those tasks. Many of the tasks are required for performing specific operations on your machine and removing them may cause your program or entire computer to malfunction or reboot.

Should I download a new copy of the Mciwndx.ocx file?

The only time you should ever download a new version of a system file is when it comes through an application update or from the publisher directly. Be very cautious when downloading system files from third-party websites as they may contain additional software that you would install without knowing. This could cause an even larger issue than the error you are getting from this file!
WARNING: If you already downloaded a new file from an external site,
Click Here to run a system scan immediately!

Best way to fix Mciwndx.ocx errors

When these errors occur, verify if any new hardware or software has been added. If so, simply removing the new hardware or software may resolve the issue. If not, follow the steps below.

  1. Scan for any driver updates for new equipment. If new equipment or programs have been loaded, they may require updated drivers. Download new, secure drivers and perform a clean system restart.
  2. Download and install updates for the operating system. Regardless of the operating system version you are using, it is always considered good practice to install the latest security updates.
  3. Use anti-virus and anti-malware applications. Most virus scanners will protect your machine from basic threats. To increase your protection, use a malware scanner as well.
If the above steps fail to resolve the issue, it may be due to outdated hardware or software.

More information about Mciwndx.ocx

For Windows 7, mciwndx.ocx is a process utilized by the computer to open and execute documents required to operate software and programs. Windows contains multiple thousands of documents and directories within the operating system itself and necessary applications. If the application is not responding, the associated mciwndx.ocx process may be corrupt, missing, or otherwise altered in the applications file. Also, Windows tends to become increasingly unresponsive as mciwndx.ocx files are damaged or improperly formatted for usage with Windows 7.

Follow the steps at to learn how to properly register a file. Once the file has been registered with your operating system, reboot your computer and the errors should be gone. If you are still receiving errors after properly registering the file, you may need to perform a more detailed PC analysis.