foo_ui_std.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like foo_ui_std.dll, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like DiagTrackRunner.exe - to follow. These files were created so that multiple programs (eg. Foobar2000) could share the same foo_ui_std.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 foo_ui_std.dll is attempted to be loaded either when Foobar2000 is starting up, or in some cases already running. Some of the most common foo_ui_std.dll errors include:
- Access Violation at address - foo_ui_std.dll.
- foo_ui_std.dll could not be found.
- Cannot find C:\Program Files (x86)\foobar2000\components\foo_ui_std.dll.
- Cannot register foo_ui_std.dll.
- Cannot start Foobar2000. A required component is missing: foo_ui_std.dll. Please install Foobar2000 again.
- Failed to load foo_ui_std.dll.
- The application has failed to start because foo_ui_std.dll was not found.
- The file foo_ui_std.dll is missing or corrupt.
- This application failed to start because foo_ui_std.dll was not found. Re-installing the application may fix this problem.
Your foo_ui_std.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Foobar2000), or deleted by a malware infection. Furthermore, foo_ui_std.dll file corruption could be caused from a power outage when loading Foobar2000, system crash while loading foo_ui_std.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.