It is always a good idea to run an antivirus scan to look for malware or viruses that could be playing havoc on your. 9 Methods for Fixing Missing DLL Errors on Windows 10 1. While this is one way to fix the problem, there are several other methods you can try which we’ve outlined below. In any of these instances, your programs may not start and your computer may tell you to re-install the application to fix the issue. The DLL file becomes corrupted due to malware or a hardware malfunction.This may make existing DLL files invalid or incompatible. The DLL file was overwritten with a new installation of a program.This can happen during hard disk cleaning or during the removal of programs. The DLL file was accidentally deleted.You may receive a missing DLL error if any of the following occur: