How to fix
Windows Media Player Error 0xc0000005 (file CompPkgSup.DLL)
on Windows

I can’t open MPG or WTV video Media Player of Windows 10 x64. Both programs crash with the error code 0xc0000005. I also noticed a CompPkgSup.DLL file mentioned in the log. Yesterday I have installed the KB4013429 update, so I assume that it’s the culprit. Could someone please help?

KB4013429 is the latest cumulative update for Windows 10 OS. Microsoft released it in the middle of March 2017 expecting that it will fix many issues that its predecessors have caused. Unfortunately, but it looks as though the update caused lots of new bugs rather than addressed the old ones.

While the number of unsatisfied Windows 10 users is increasingly growing,[ref en-2] it would be naïve to believe that all the issues will be addressed and patches released immediately. The vast majority of Windows 10 users cannot install the cumulative update KB4013429 although it is downloaded completely.

In this case, Microsoft recommends people try installing the update manually by downloading it from Microsoft and installing just like any other Win32 program. Unfortunately, Microsoft received an outrage of people who have managed to install KB4013429 update, but then experienced a complete crash of Windows DVD Player and other 3rd party applications that employ Microsoft MPEG-2 libraries. Microsoft has already officially confirmed the bug but did not provide the fixes yet.

People claim that they cannot launch Windows DVD Player,[ref en-3] Windows Media Player,[ref en-1] and many other apps as they did not respond or fail to open with an error code 0xc0000005 (file CompPkgSup.DLL). As we have already pointed out, the official fixes are not yet available.

However, there are a couple of methods that people have already tried and reported as working. If you opt for trying, we will provide a comprehensive guide on how to fix Windows DVD Player error code 0xc0000005 down below.

If however, you disapprove of unofficial fixes, you may work around this bug by rolling back the update. Then you will have to wait until Microsoft releases the patch and re-run the cumulative update KB4013429.

How to Fix Windows Media Player Error 0xc0000005 (file CompPkgSup.DLL) caused by the KB4013429 update?

Method 1. Uninstall the KB4013429 update

• Click Windows key + I to open the Settings app.
• Select Updates & Security.
• Open Update History and click Uninstall Updates at the top of the window.

  

• Find the cumulative update KB4013429, right-click it, and select Uninstall.

Unfortunately, not all cumulative updates can be removed. If you cannot uninstall the KB4013429 update, please try the following methods to address the Windows multimedia error 0xc0000005.

Method 2. Install the older version of the CompPkgSup.dll file

This particular Windows Update contains a new version of the CompPkgSup.dll file, which has a bug leading to the multimedia crashes. The problem happens only when the particular application uses the Microsoft DTV-DVD Video Decoder (msmpeg2vdec.dll) on systems where MPEG-2 is activated in that decoder. You may try to fix CompPkgSup.dll error by following the steps provided below. IMPORTANT: since this method is not officially approved by Microsoft, you take it at your own risk.

• Click Windows key + X and select Command Prompt (Admin).
• Copy and paste Dir / a / b / s "% windir% \\ WinSxS \\ CompPkgSup.dll" | Find "_10.0.14393.0_"> "% userprofile% \\ Desktop \\ CompPkgSup.dll.txt" command into the Command Prompt window and press Enter.

  

• Then reboot the system and download this file.
• Follow the on-screen instructions to extract the zip file.

This link is safe to click on. However, installing .dll files separately is not the best solution regarding any of the Windows 10 bugs. However, this may help you to fix 0xc0000005 error temporarily until Microsoft releases the official patch. By the way, if you are going to use the provided CompPkgSup.dll file, note that it will be sfc /scannow will automatically restore the current system files from build 10.0.14393.953.

Method 3. Perform an SFC scan via Command Prompt

There might be some corrupted files in your Windows computer system that have something to do with the appearance of  Windows Media Player Error 0xc0000005 (file CompPkgSup.DLL) on your Windows 10 computer. You should run a checkup process by running the elevated Command Prompt in order to find out if this is true. If you do not know how to complete this particular method, we recommend following the below-provided step-by-step guidelines:

• Go to Windows Search.
• Type "cmd" in the search section.
• Find the Command Prompt in the results.
• Right-click on the option and select "Run as administrator".
• When a black dialogue box shows up, type sfc /scannow after the blinking cursor.

  

• Hit the Enter key and wait for the command to execute.
• Reboot your computer.

Method 4. Try fixing things automatically

If you have tried all the above-given methods and none of them seemed successful, you can try repairing things automatically. For this purpose, you need to download and install system repair software such as [d1] or any other similar tool that might be capable of fixing corrupted objects on your computer.