Format_H.dat is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like Format_H.dat, 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. Wondershare Filmora) could share the same Format_H.dat 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 DAT 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 Format_H.dat is attempted to be loaded either when Wondershare Filmora is starting up, or in some cases already running. Some of the most common Format_H.dat errors include:
- Access Violation at address - Format_H.dat.
- Format_H.dat could not be found.
- Cannot find C:\Program Files\Wondershare\Wondershare Filmora\Format_H.dat.
- Cannot register Format_H.dat.
- Cannot start Wondershare Filmora. A required component is missing: Format_H.dat. Please install Wondershare Filmora again.
- Failed to load Format_H.dat.
- The application has failed to start because Format_H.dat was not found.
- The file Format_H.dat is missing or corrupt.
- This application failed to start because Format_H.dat was not found. Re-installing the application may fix this problem.
Your Format_H.dat file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Wondershare Filmora), or deleted by a malware infection. Furthermore, Format_H.dat file corruption could be caused from a power outage when loading Wondershare Filmora, system crash while loading Format_H.dat, 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.