Question: what is mfplat.dll and how to fix it?
Answer: Restore mfplat. ...  Install the Media Feature pack from Microsoft to restore the missing mfplat. ...  Run a virus/malware scan of your entire system. ...  Use System Restore to undo recent system changes. ...  Run the sfc /scannow System File Checker command to replace a missing or corrupt copy of the mfplat.