NsisHtml.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like NsisHtml.dll, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like MpSigStub.exe - to follow. These files were created so that multiple programs (eg. WinWSD WebSite Downloader) could share the same NsisHtml.dll file, saving valuable memory allocation, therefore making your computer run more efficiently.
Unfortunately, what makes DLL files so convenient and efficient, also makes them extremely vulnerable to problems. If something happens to a shared DLL file, either it goes missing or gets corrupted in some way, it can generate a "runtime" error message. Runtime is pretty self-explanatory; it means that these errors are triggered when NsisHtml.dll is attempted to be loaded either when WinWSD WebSite Downloader is starting up, or in some cases already running. Some of the most common NsisHtml.dll errors include:
- Access Violation at address - NsisHtml.dll.
- NsisHtml.dll could not be found.
- Cannot find C:\Users\Tester\AppData\Local\Temp\nseE3.tmp\NsisHtml.dll.
- Cannot register NsisHtml.dll.
- Cannot start WinWSD WebSite Downloader. A required component is missing: NsisHtml.dll. Please install WinWSD WebSite Downloader again.
- Failed to load NsisHtml.dll.
- The application has failed to start because NsisHtml.dll was not found.
- The file NsisHtml.dll is missing or corrupt.
- This application failed to start because NsisHtml.dll was not found. Re-installing the application may fix this problem.
Your NsisHtml.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with WinWSD WebSite Downloader), or deleted by a malware infection. Furthermore, NsisHtml.dll file corruption could be caused from a power outage when loading WinWSD WebSite Downloader, system crash while loading NsisHtml.dll, bad sectors on your storage media (usually your primary hard drive), or quite commonly, a malware infection. Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.