WMPDXM.DLL errors can be due to many different reasons and often this error appears during the installation or use of certain programs at the start or shut down of windows. It is important for you to know about the context of wmpdx.dll so that you can solve the problem. It can be due to registry problem malware or virus or due to hardware failure. There can be many ways through which you can fix this error.
You should not try to download wmpdxm.dll file from website of DLL download rather you should get this file legitimate or original source if you need to get a copy of wmpdxm.dll. You can also run or malware scan of your computer which might have damaged DLL file. You should also restore your recent system changes. You can also fix this problem by re-installing the program which might have used the wmpdxm.dll file.
It is also important for you to update the drivers of hardware in which wmpdxm.dll file is used. You should install any available Windows updates. You must restore the registry of your computer in order to resolve this problem. You should avoid downloading two versions of same file and computer is unable to configure both versions. Therefore you should download latest version of WMP to fix this problem. It is also good for you to optimize your computer with good registry cleaner which can help you to avoid .dll errors and it is the best way to keep your computer away from wmpdxm.dll errors.