Build Failed: Error Launch Failed! Unknown Error.

Thank you for double-checking that the AnimGraph wasn’t included as an additional dependency.

Libsndfile is a C library which is used to for reading and writing files containing sampled sound. You might need to simply download it.

Check this [AnswerHub post][1] out. If that doesn’t help any, please answer the following and I’ll continue to investigate.

  • Have you tried deleting your Intermediate and Saved folders from the project?
  • Have you tested in 4.14.0 or 4.14.1 to see if the error persists through an upgrade?
  • Is this project a full C++ project?

Thanks!

[BUG] LNK1181: cannot open input file 'libsndfile-1.lib' - Platform & Builds - Epic Developer Community Forums