Why do I have RunDLL errors in the first place?
The funny thing about RunDLL errors is that they’re usually not the fault of RunDLL at all! Typically, a RunDLL error is caused when RunDLL attempts to access a DLL, or a function within a DLL, and the access fails. This can be caused by missing DLLs, library corruption, or software code errors. Sometimes, these problems can be introduced by malicious software.