# Error when builiding banks for PlayStation 4: "Failed to encode bank due to the following error: An operating system based file error was encountered."

**URL:** <https://qa.fmod.com/t/error-when-builiding-banks-for-playstation-4-failed-to-encode-bank-due-to-the-following-error-an-operating-system-based-file-error-was-encountered/18357>\
**Category:** FMOD Engine\
**Tags:** ue4\
**Created:** [February 14, 2022, 1:08pm UTC](https://qa.fmod.com/t/error-when-builiding-banks-for-playstation-4-failed-to-encode-bank-due-to-the-following-error-an-operating-system-based-file-error-was-encountered/18357 "2022-02-14T13:08:21Z")\
**Posts on this page:** 1\
**Showing post:** 6

<div class="post-metadata">

**Author:** ![jeff\_fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/jeff_fmod/32/1766_2.png) [@jeff\_fmod](https://qa.fmod.com/u/jeff_fmod)\
**Post date:** [February 27, 2022, 11:32pm UTC](https://qa.fmod.com/t/error-when-builiding-banks-for-playstation-4-failed-to-encode-bank-due-to-the-following-error-an-operating-system-based-file-error-was-encountered/18357/6 "2022-02-27T23:32:20Z")

</div>

In a [previous case](https://qa.fmod.com/t/error-processing-an-operating-system-based-file-error-was-encountered/15098/3) this error has indicated missing or corrupt files. Is there a yellow “Missing File(s)” icon lit up in your project? If so you can click on it and try to resolve any missing files. Otherwise you could try the suggested resolution from the linked case and create a new bank, assigning events from other banks one by one until you find the event causing the build to fail.

---

_[View the full topic](https://qa.fmod.com/t/error-when-builiding-banks-for-playstation-4-failed-to-encode-bank-due-to-the-following-error-an-operating-system-based-file-error-was-encountered/18357)._