There is a common error named error status 0xc000012f whenever you are updating Windows 8 or Windows 10. Apparently, this error is related to system32\uxtheme.dll. this problem will appear for a lot of programs in the system. Unfortunately, this error cannot be solved just by pressing the OK button. In fact, there will be the recurrent stream of program windows that will open up despite how many time you try to click on OK to exit them. Aside from that, this error also can occur when the image file being used are not in the correct format. The issue might seem complicated but do not worry because there is always way to Rome. Please keep reading this entire article because in this page you will be given some methods to fix this error.
The first method to fix error status 0xc000012f is uninstalling the updates. Please uninstall KB2879017 update when you have Windows 8 64-bit system. This one is the Cumulative Security Update for Internet Explorer version 10. If after the recent update the error keeps appearing, then you should keep going and uninstall it whichever the update is. In order to uninstall, please press Windows key + F. Then, type “installed updates” on the search menu. The next thing you have to do is to click on program and there will be a new window open showing all updates in the system. After that, please scroll the list and find the update KB2879017 or the latest one. lastly, please uninstall it.
In case you cannot uninstall the update, you still have another option which is to restore the system. To restore the system, please open the search menu by pressing Windows key + and F. Then, type “restore”. Just click on “restore your files from file history”. After that step, there will b a new window opens up with the available restore points. Please select the one which occurred before the installation of the faulty update. When you are in the process, make sure that you mark the update as Windows within Windows update settings. This way will prevent it from automatically downloading and installing.
The second one is installing DirectX. Please do this method if the error is linked to STATUS_INVALID_IMAGE_NOT_MZ. This means that the file is not in the right format. In this case, downloading and running the latest DirectX End User Runtime program is a must. After downloading, please follow the instructions on the screen to install it. then, you can check the occurrence of this error.
The third one is checking for the new updates. The only thing you can do is to check the update manually to make sure that the system has the newest system drivers and updates. If no one of the methods mentioned above help, you might try the other solutions to fix this error status 0xc000012f. Some alternatives include cleaning the boot and installing visual C++. Hope the error can be solved soon.