Pb with KB2904440: Mediaplayer pb & cannot remove patch

Hello
The day this patch was available, I installed it, even though it was not tagged as important, together with some other patches.
After that, Mediaplayer was not generating any sound through my sound card. After a lot of search (deinstalling and reinstalling my sound card), I decided to remove the patches one after the other. I could do it for all of them but patch KB2904440 without improving Mediaplayer.
I was not able to remove patch KB2904440 as the option for removing was grey. I had to go to the previous restore point and even there I got an error message saying that it was not able to restore correctly.
But after reboot I had a message on the desktop saying it had been restored to a point which was older to the one I had selected. After that my Mediaplayer worked again and I could install again the other patches.
Now this KB2904440 patch is considered as important and I am afraid of installing it again.
I saw on the WEB that some other people had problems removing it but with no follow up to their thread . Have you experienced problems with this patch?
Thank you

This is a know problem from Microsoft. To resolve this issue do the folowing..

Step 1) Open an elevated Command Prompt > Type: Dism /Online /Cleanup-Image /StartComponentCleanup > Press enter

Step 2) Open an elevated Command Prompt > Type: Dism /Online /Cleanup-Image /RestoreHealth > Press enter

Step 3) Open an elevated Command Prompt > Type: SFC /Scannow > Press enter

Step 4) Reboot the computer.

Download the Patch and try to install.

Link: (32bit) https://www.microsoft.com/en-us/download/details.aspx?id=41574

Link: (64bit) https://www.microsoft.com/en-us/download/details.aspx?id=41572