There are many reasonswhy downloading a DLL file that way is a bad idea.
Restore wmvcore.dll from the Recycle Bin.
The easiest possible cause of a “missing” wmvcore.dll file is that you’ve mistakenly deleted it.
Install Windows Media Player, which is the source of the wmvcore.dll file.
In there, chooseFeatures>Add Featuresand then selectDesktop Experience.
Confirm any prompts and follow through with the setup wizard to complete the WMP install.
Run a virus/malware scan of your entire system.
Use System Restore to undo recent system changes.
Update the driversfor hardware devices that might be related to wmvcore.dll.
The wmvcore.dll file may or may not be related to video cardsthis was just an example.
The key here is to pay close attention to the context of the error and troubleshoot accordingly.
fire off the sfc /scannow System File Checker commandto replace a missing or corrupt copy of the wmvcore.dll file.
Install any available Windows updates.
The wmvcore.dll file could be included in one of those updates.
Test your memoryand thentest your hard drive.
If the hardware fails any of your tests,replace the memoryorreplace the hard driveas soon as possible.
Repair your installation of Windows.
Use aregistry cleanerto repair wmvcore.dll related issues in the registry.
We rarely recommend the use of registry cleaners.
Perform a clean installation of Windows.
This will erase everything from the hard drive and install a fresh copy of Windows.
If none of the steps above correct the wmvcore.dll error, this should be your next course of action.
All the information on your hard drive will be erased during this step.
Troubleshoot for a hardware problemif any wmvcore.dll errors persist.
After a clean install of Windows, your DLL problem can only be hardware related.
Need More Help?
The context of the error is an important piece of information that will be helpful while solving the problem.
